Concept explainers
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(a)
Interpretation:
To determine the name and
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Mg is magnesium and its atomic number 12.
Explanation of Solution
The Mg is the symbol of magnesium and its atomic number is 12.The atomic number is equal to the number of proton and it is belong to the group-2.
(b)
Interpretation:
To determine the name and atomic number of Ga.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Ga is gallium and its atomic number 31.
Explanation of Solution
The Ga is the symbol of gallium and its atomic number is 31.The atomic number is equal to the number of proton and it is belong to the group-13.
(c)
Interpretation:
To determine the name and atomic number of Sn.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Sn is tin and its atomic number 50.
Explanation of Solution
The Sn is the symbol of tin and its atomic number is 50.The atomic number is equal to the number of proton and it is belong to the group-14.
(d)
Interpretation:
To determine the name and atomic number of Sb.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Sb is antimony and its atomic number 51.
Explanation of Solution
The Sb is the symbol of antimony and its atomic number is 51.The atomic number is equal to the number of proton and it is belong to the group-15.
(e)
Interpretation:
To determine the name and atomic number of Sr.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Sr is strontium and its atomic number 38.
Explanation of Solution
The Sr is the symbol of strontium and its atomic number is 38.The atomic number is equal to the number of proton and it is belong to the group-2.
(f)
Interpretation:
To determine the name and atomic number of Si.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Si is silicon and its atomic number 14.
Explanation of Solution
The Si is the symbol of silicon and its atomic number is 14.The atomic number is equal to the number of proton and it is belong to the group-14.
(g)
Interpretation:
To determine the name and atomic number of Cs.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Cs is cesium and its atomic number 55.
Explanation of Solution
The Cs is the symbol of cesium and its atomic number is 55.The atomic number is equal to the number of proton and it is belong to the group-1.
(h)
Interpretation:
To determine the name and atomic number of Ca.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Ca is calcium and its atomic number 20.
Explanation of Solution
The Ca is the symbol of calcium and its atomic number is 20.The atomic number is equal to the number of proton and it is belong to the group-2.
(I)
Interpretation:
To determine the name and atomic number of Cr.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
(I)
Answer to Problem 21CR
The name of the element Cr is chromium and its atomic number 24.
Explanation of Solution
The Cr is the symbol of chromium and its atomic number is 24.The atomic number is equal to the number of proton and it is belong to the
(J)
Interpretation:
To determine the name and atomic number of Co.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
(J)
Answer to Problem 21CR
The name of the element Co is cobalt and its atomic number 27.
Explanation of Solution
The Co is the symbol of cobalt and its atomic number is 27.The atomic number is equal to the number of proton and it is belong to the group d element.
(k)
Interpretation:
To determine the name and atomic number of Cu.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Cu is copper and its atomic number 29.
Explanation of Solution
The Cu is the symbol of copper and its atomic number is 29.The atomic number is equal to the number of proton and it is belong to the group d element.
(l)
Interpretation:
To determine the name and atomic number of Ag.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Ag is silver and its atomic number 47.
Explanation of Solution
The Ag is the symbol of silver and its atomic number is 47.The atomic number is equal to the number of proton and it is belong to the group d element.
(m)
Interpretation:
To determine the name and atomic number of U.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element U is uranium and its atomic number 92.
Explanation of Solution
The U is the symbol of uranium and its atomic number is 92.The atomic number is equal to the number of proton and it is belong to the f block elements.
(n)
Interpretation:
To determine the name and atomic number of As.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element As is arsenic and its atomic number 33.
Explanation of Solution
The As is the symbol of arsenic and its atomic number is 33.The atomic number is equal to the number of proton and it is belong to the group-15.
(o)
Interpretation:
To determine the name and atomic number of At.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element At is astatine and its atomic number 85.
Explanation of Solution
The At is the symbol of astatine and its atomic number is 85.The atomic number is equal to the number of proton and it is belong to the group-17.
(p)
Interpretation:
To determine the name and atomic number of Ar.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Ar is argon and its atomic number 18.
Explanation of Solution
The Ar is the symbol of argon and its atomic number is 18.The atomic number is equal to the number of proton and it is belong to the group-18.
(q)
Interpretation:
To determine the name and atomic number of Zn.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Zn is zinc and its atomic number 30.
Explanation of Solution
The Zn is the symbol of zinc and its atomic number is 30.The atomic number is equal to the number of proton and it is belong to the d block element.
(r)
Interpretation:
To determine the name and atomic number of Mn.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Mn is manganese and its atomic number 25.
Explanation of Solution
The Mn is the symbol of manganese and its atomic number is 25.The atomic number is equal to the number of proton and it is belong to the d block element.
(s)
Interpretation:
To determine the name and atomic number of Se.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Se is selenium and its atomic number 34.
Explanation of Solution
The Se is the symbol of selenium and its atomic number is 34.The atomic number is equal to the number of proton and it is belong to the group-16.
(t)
Interpretation:
To determine the name and atomic number of W.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element W is tungsten and its atomic number 74.
Explanation of Solution
The W is the symbol of tungsten and its atomic number is 74.The atomic number is equal to the number of proton and it is belong to the d block element.
(u)
Interpretation:
To determine the name and atomic number of Ra.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Ra is radium and its atomic number 88.
Explanation of Solution
The Ra is the symbol of radium and its atomic number is 88.The atomic number is equal to the number of proton and it is belong to the group-2.
(v)
Interpretation:
To determine the name and atomic number of Rn.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Rn is radon and its atomic number 86.
Explanation of Solution
The Rn is the symbol of radon and its atomic number is 86.The atomic number is equal to the number of proton and it is belong to the group-18.
(w)
Interpretation:
To determine the name and atomic number of Ce.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Ce is cerium and its atomic number 58.
Explanation of Solution
The Ce is the symbol of cerium and its atomic number is 58.The atomic number is equal to the number of proton and it is belong to the f block element.
(x)
Interpretation:
To determine the name and atomic number of Zr.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Zr is zirconium and its atomic number 40.
Explanation of Solution
The Zr is the symbol of zirconium and its atomic number is 40.The atomic number is equal to the number of proton and it is belong to the d block element.
(y)
Interpretation:
To determine the name and atomic number of Al.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Al is aluminum and its atomic number 13.
Explanation of Solution
The Al is the symbol of magnesium and its atomic number is 13.The atomic number is equal to the number of proton and it is belong to the group-13.
(z)
Interpretation:
To determine the name and atomic number of Pd.
Concept Introduction:
The modern periodic table is arranged according to the atomic number of the element and the symbol of the elements is given in the periodic table. Periodic table consist of 18 group and 7 period. Atomic number is equal to the number of proton. Mass number is equal to the sum of number of proton and number of neutron.
Like: Sodium: Symbol-Na, Atomic number-11.
Answer to Problem 21CR
The name of the element Pd is palladium and its atomic number 46.
Explanation of Solution
The Pd is the symbol of palladium and its atomic number is 46.The atomic number is equal to the number of proton and it is belong to the d block element.
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Chapter 5 Solutions
Introductory Chemistry: A Foundation
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- For the following processes that show the formation of ions, use the periodic table to indicate the number of electrons and protons present in both theionand theneutral atomfrom which the ion is made. a.CaCa2++2e b.P+3eP3 c.Br+eBr d.FeEe3++3e e.AlAl3++3e f.N+3eN3arrow_forwardEarly tables of atomic weights (masses) were generated by measuring the mass of a substance that reacts with 1.00 g of oxygen. Given the following data and taking the atomic mass of hydrogen as 1.00, generate a table of relative atomic masses for oxygen, sodium, and magnesium. Element Mass That Combines with 1.00g Oxygen Assumed Formula Hydrogen 0.126 g HO Sodium 2.875 g NaO Magnesium 1.500 g MgO How do your values compare with those in the periodic table? How do you account for any differences?arrow_forwardChlorine has two isotopes, Cl-35 and Cl-37. Their abundances are 75.53% and 24.47%, respectively. Assume that the only hydrogen isotope present is H-1. (a) How many different HCI molecules are possible? (b) What is the sum of the mass numbers of the two atoms in each molecule? (c) Sketch the mass spectrum for HCI if all the positive ions are obtained by removing a single electron from an HCI molecule.arrow_forward
- These questions concern the work of J. J. Thomson. a. From Thomsons work, which particles do you think he would feel are most important for the formation of compounds (chemical changes) and why? b. Of the remaining two subatomic particles, which do you place second in importance for forming compounds and why? c. Propose three models that explain Thomsons findings and evaluate them. To be complete you should include Thomsons findings.arrow_forwardWhen a sample of phosphorus burns in air, the compound P4O10 forms. One experiment showed that 0.744 g of phosphorus formed 1.704 g of P4O10. Use this information to determine the ratio of the atomic weights of phosphorus and oxygen (mass P/mass O). If the atomic weight of oxygen is assumed to be 16.000, calculate the atomic weight of phosphorus.arrow_forwardA cube of sodium has length 1.25 in. How many atoms are in that cube? (Note: dNa=0.968g/cm3.)arrow_forward
- Name the compounds in parts ad and write the formulas for the compounds in parts eh. a. NaBr b. Rb2O c. CaS d. AlI3 e. strontium fluoride f. aluminum selenide g. potassium nitride h. magnesium phosphidearrow_forwardEach of the following statements is true, but Dalton might have had trouble explaining some of them with his atomic theory. Give explanations for the following statements. a. The space-filling models for ethyl alcohol and dimethyl ether are shown below. These two compounds have die same composition by mass (52% carbon, 13% hydrogen, and 35% oxygen), yet the two have different melting points, boiling points, and solubilities in water. b. Burning wood leaves an ash that is only a small fraction of the mass of the original wood. c. Atoms can be broken down into smaller particles. d. One sample of lithium hydride is 87.4% lithium by mass, while another sample of lithium hydride Ls 74.9% lithium by mass. However, the two samples have the same chemical properties.arrow_forwardThe average atomic masses of some elements may vary, depending upon the sources of their ores. Naturally occurring boron consists of two isotopes with accurately known masses ( 10B, 10.0129 amu and 11B, 11.0931 amu). The actual atomic mass of boron can vary from 10.807 to 10.8 19, depending on whether the mineral source is from Turkey or the United States. Calculate the percent abundances leading to the two values of the average atomic masses of boron from these two countries.arrow_forward
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