34. According to general trends in the periodic table, predict which element in each of the following pairs has the greater metallic character. (b) Na or K (d) H or Fe (a) B or Al (c) Mg or Ba
Q: Identify and encircle the element that has the greater atomic radius. 1. krypton and francium
A: When we move across the period from left to right in a periodic table, there is decrease in atomic…
Q: (a) What behavior distinguishes paramagnetic and diamagnetic substances? (b) Why are paramagnetic…
A: Since you have posted multiple questions, we will solve the first question for you. To get the…
Q: A main group element with the valence electron configuration 2s22p3 is in periodic group__________…
A: Given electronic configuration is 2s22p3
Q: What are the elements under Group 4A? Tabulate your answer by giving its description, importance,…
A: Group 4A contains the elements of carbon family having C , Si , Ge , Sn , Pb .
Q: Write the valence electron configuration for each of thefollowing:a. alkali metals b.…
A: a. alkali metals Valence electron configuration = ns1 b. Group 4A (14) Valence electron…
Q: Provide the electronic configuration and electron orbital diagram for nickel (Z = 28).
A: The arrangement of electrons of an atom or molecule in atomic or molecular orbitals are called…
Q: Choose the element with the higher first ionization energy in each pair.a. Br or Bi b. Na or Rb c.…
A: Ionization energy : From the ground state of an atom , if one electron is removed than the energy…
Q: 2) What is one of the major hazards associated with potassium dichromate?
A: Potassium dichromate molecular formula is K2Cr2O7.
Q: Claim: Reactivity of alkali metals increase down a group, or column, in the periodic table.…
A: The alkali metals are six chemical elements in Group 1, the leftmost column in the periodic table.…
Q: Based on periodic trends, which one of these elementswould you expect to be most easily oxidized:…
A: K is most easily oxidised
Q: In group 15 elements, there is considerable increase in covalent radius from N to P but small…
A: N i.e nitrogen is period 2 element, P i.e phosphorous is period 3 element, As i.e Arsenic is period…
Q: Which of the following has the highest ionization energy. a) ca or ga b) Cl or I highest…
A: Ionization energy is defined as the energy required to remove an electron from its gaseous element.…
Q: Provide explanations of the following phenomena: The electron configuration of Ti is [Ar] 4s2 3d2,…
A: The given statement is, The electron configuration of Ti is [Ar] 4s2 3d2, but that of Cr2+ is [Ar]…
Q: Tungsten has the highest melting point of any metal in theperiodic table: 3422 °C. The distance…
A:
Q: What family of elements are the most active metals ?
A: What family of elements are the most active metals has to be given.
Q: Why is zinc not regarded as a transition element?
A: Transition metal has incomplete d subshell in one or more than one oxidation state.
Q: A ferromagnetic element is one that O a there is no magnetic force Ob magnets strongly attract…
A: The ferromagnetic elements are:
Q: <p>Which element has the higher ionization energy, Cu or Au?
A: The elements in a modern periodic table are arranged in an increasing order of their atomic number.…
Q: Choose the element with the higher first ionization energy from each pair.a. Br or Bi b. Na or Rb c.…
A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…
Q: Of the following, which element has the highest first ionization energy?
A: Ionization energy is defined as the the minimum amount of energy which is required to remove an…
Q: What metallic solid has an atomic radius of 138.6
A: Aluminium metallic solid has an atomic radius of 138.6
Q: Which of the following properties of Group I elements decrease(s) with increasing atoinic number? 1…
A: An atomic number of an element is given by its number of protons present in the nucleous. As the…
Q: hich of the following is NOT true for the Group 1 A elements? a. Most of them are soft silvery…
A: Given : We have to choose the correct option about Group 1A elements.
Q: Which of the following is NOT an anomalous property of the period 2 elements? Select one: Oa. The…
A: Answer
Q: 5. How incorporated into the periodic table? How did the incorporation of the transition metals…
A: The position of transition metal is in the middle of the periodic table.
Q: (a) What is the trend in first ionization energies as one proceedsdown the group 7A elements?…
A: Moving from Fluorine to Iodine in group 7A, first ionization energies decrease and atomic radii…
Q: Arrange in order of decreasing first ionization energy: C, N, Si
A: The answer is given as follows
Q: a) Write the equation representing the 3rd ionization energy for Fe. (b) The electron affinity…
A: The minimum amount of energy is required to remove one electron from gaseous isolated atom,called…
Q: The element which has the electronic configuration [Kr], 55, 4d0 is IS . a. Paramagnetic in its…
A:
Q: Why is agron the smallest than the other elements in period 3?
A:
Q: Fictional, thus not on the periodic table. Lz, a transition metal, forms the compound LzS₂ when…
A:
Q: Which of the following is not the similar properties shared by the diagonal effect pair of beryllium…
A: Diagonal relationship between Be and Al: Both have tendency to form covalent compounds.e.g…
Q: Explain how the following properties change across the periodic Table from group 1 to group 2, and…
A: d) Melting point increases across a period. Melting point is the temperature at which a substance…
Q: Which of the following is atransition metal? A. Barium B. Mercury C. Cesium D. Aluminium
A: A transition metal is defined as an element whose atom has a partly filled d sub-shell, or which can…
Q: Write a balanced equation for the reaction that occurs ineach of the following cases: (a) Cesium is…
A: Balanced equation is that when atoms on both reactants and products side are equal. A chemical…
Q: Write detailed answers to the following. a. What are different stages of the development of…
A: Given: a) Periodic table b) Carbon, nitrogen and oxygen To find: a) different stages of periodic…
Q: A transition metal ion has a 2+ charge and its configuration is [Ar] 3d° what is the symbol of the…
A:
Q: Does metallic character increase, decrease, or remainunchanged as one goes from left to right across…
A: Metallic character decreases as one goes from left to right across a row of the periodic table.
Q: Explain the following observations: (i) Transition elements generally form coloured compounds. (ii)…
A: Elements which have partially or incompletely filled d-orbitals in their ground or stable oxidation…
Q: This is about Quantum Numbers, Electronic Configuration, and Periodic Trends. Following are…
A: We have find out isoelectronic species
Q: Why Lanthanides and Actinides are separated from the other elements? Please explain briefly.
A: Lanthanides and Actinides are separated from the other elements that have to be explained below.
Q: Determine whether each element is a transition element. Mo
A: Solution-The transition elements are located in groups (3 IIIB – 12 IIB) in periodic table , which…
Q: Use the data from Appendix F to graph the variation ofatomic radius with atomic number for the…
A:
Q: Which of the following is not true? O a. The transition metals are characterized by partially filled…
A:
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- An element X reacts with oxygen to form XO2 and with chlorineto form XCl4. XO2 is a white solid that melts at high temperatures(above 1000 °C). Under usual conditions, XCl4 is acolorless liquid with a boiling point of 58 °C. (a) XCl4 reactswith water to form XO2 and another product. What is thelikely identity of the other product? (b) Do you think thatelement X is a metal, nonmetal, or metalloid?An element X reacts with oxygen to form XO2 and with chlorineto form XCl4. XO2 is a white solid that melts at high temperatures(above 1000 °C). Under usual conditions, XCl4 is acolorless liquid with a boiling point of 58 °C. (a) XCl4 reactswith water to form XO2 and another product. What is thelikely identity of the other product? (b) Do you think thatelement X is a metal, nonmetal, or metalloid? (c) By using asourcebook such as the CRC Handbook of Chemistry and Physics,try to determine the identity of element X.Name the following binary ionic compounds. (a) MgF2 (b) Bal2 (c) FeCl2
- Assume that you encounter the following phrases in your reading. What is the chemical formula for each substance mentioned? (a) Sodium Hydrogen carbonate is used as a deodorant. (b) Calcium hypochlorite is used in some bleaching solutions. (c) Hydrogen cyanide is a very poisonous gas. (d) Magnesium hydroxide is used as a cathartic. (e) Tin (II) fluoride has been used as a fluoride additive in toothpastes. (f) When cadmium sulfide is treated with sulfuric acid, fumes of hydrogen sulfide are given off.1.Draw the electronic diagrams for the following compounds (showing outermost shell electrons only). (a) A compound formed from calcium and sulphur (b) a compound formed from aluminium and oxygen (c) A compound formed from nitrogen and chlorine (d) carbon dioxidePredict the chemical formula and name for the ionic compound formed by (a) Na+ and CO32-, (b) Al3+ and CH3COO-, (c) NH4+ and PO43-
- Predict the chemical formula for the ionic compoundformed by (a) Ca2+ and Br-, (b) K+ and CO32-, (c) Al3+ andCH3COO-, (d) NH4+ and SO42-, (e) Mg2+ and PO43-.Write the chemical formulas for the following compounds:(a) Silver cyanide(b) Calcium hypochlorite(c) Potassium chromate(d) Gallium oxide(e) Potassium superoxide(f) Barium hydrogen carbonateName each ionic compound. In each of these compounds, the metal forms more than one type of ion. (a) CrCl2 (b) C:CI3 (c) SnO2 (d) Pbl2
- A gaseous binary compound has a vapor density that is 1.94 times that of oxygen at the same temperature and pressure. When 1.39 g of the gas is burned in an excess of oxygen, 1.21 g water is formed, removing all the hydrogen originally present.(a) Estimate the molecular mass of the gaseous compound.(b) How many hydrogen atoms are there in a molecule ofthe compound?(c) What is the maximum possible value of the atomicmass of the second element in the compound?(d) Are other values possible for the atomic mass of thesecond element? Use a table of atomic masses to identify the element that best fits the data.(e) What is the molecular formula of the compound?Let E be any representative element. Following the patterns in the table, write formulas for the hydrogen and oxygen compounds of the following elements. Answers should be in the form of E2O (for E2O). (a) Sb Compound with hydrogen: Compound with oxygen: (b) Se Compound with hydrogen: Compound with oxygen: (c) Cl Compound with hydrogen: Compound with oxygen: (d) C Compound with hydrogen: Compound with oxygen:Give the name and formula for the acid derived from each of the following anions: (a) hydrogen carbonate (b) IO4 - (c) cyanide (d) HS-