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Concept explainers
(a)
Interpretation:
The chemical family of krypton
Concept introduction:
Elements with the same chemical properties are found in the same group or vertical column. Some of the group of elements are known as chemical families.
Family trends are mostly found among the main group elements. For example, noble gases, halogens, and alkali metals.
(b)
Interpretation:
The chemical family of beryllium is to be identified.
Concept introduction:
Elements with the same chemical properties are found in the same group or vertical column. Some of the group of elements are known as chemical families.
Family trends are mostly found among the main group elements. For example, noble gases, halogens, and alkali metals.
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Chapter 11 Solutions
Introductory Chemistry: An Active Learning Approach
- Arrange the following in the order of increasing mass. (a) a potassium ion, K+ (b) a phosphorus molecule, P4 (c) a potassium atom (d) a platinum atomarrow_forward2-69 (Chemical Connections 2A) Why does the body need sulfur, calcium, and iron?arrow_forward2-73 (Chemical Connections 2D) Copper is a soft metal. how can it be made harder?arrow_forward
- Look up the following information for the element iridium: (i) number of protons, neutrons, and electrons; (ii) atomic number and average atomic mass; (iii) the charge of the anion(s) or cation(s) that it commonly forms; (iv) the mass of its two most common isotopes and the number of protons and neutrons in each one. Also, comment briefly on the presence of this element in meteorite craters and the significance of this observation.arrow_forwardTwo radioactive isotopes of iodine used for the diagnosis and treatment of thyroid disease have mass numbers of 123 and 131. For each isotope, give the following information: (a) the number of protons; (b) the number of neutrons; (c) the number of electrons in the neutral atom; (d) the group number.arrow_forward66. Which element do you expect to be most like magnesium? Why?(a) potassium(b) silver(c) bromine(d) calcium(e) leadarrow_forward
- A mass spectrometer is being used to separate common oxygen-16 from the much rarer oxygen-18, taken from a sample of old glacial ice. (The relative abundance of these oxygen isotopes is related to climatic temperature at the time the ice was deposited.) The ratio of the masses of these two ions is 16 to 18, the mass of oxygen-16 is 2.66 ✕ 10−26 kg, and they are singly charged and travel at 7.40 ✕ 106 m/s in a 1.40 T magnetic field. What is the separation (in m) between their paths when they hit a target after traversing a semicircle?arrow_forwardIdentify each of the following elements as a metal, non-metal, or metalloid: (a) phosphorus, (b) strontium, (c) manganese, (d) selenium, (e) sodium, (f) krypton.arrow_forward1. Using the various group classifications from the periodic table, assign all appropriate labels to each of the following elements. Each element will have multiple (2 or more) answers. (a) Silver (b) Tennessine (c) Samarium (d) Antimony 2. Calculate the numbers of each type of nucleon and the number of electrons in each of the following species. (a) neodymium-149 (b) tantalum-179 (c) sellenium-79 dianion (d) krypton-85 trication 3. Write the ground-state electron configuration for the following atoms or ions. Use core notation in your electron configurations at your own discretion. (a) As (b) Au (c) Ce (d) Zn2− (e) Po4+ 4. Write an appropriate set of four quantum numbers (n, l, ms & ms) that could be representative of a valence electron in each of the following atoms or ions. (a) Bi (b) Sr (c) Mo (d) Ru2+ (e) Eu 5. In theory, there are an infinite number of energy levels and atomic orbital types that we can define using the solutions to the Schrödinger…arrow_forward
- (1) The element gallium (Ga) exists in two isotopic forms with the following abundances: 60.16% 69Ga and 39.84% 71Ga. Calculate the atomic mass of gallium. (The exact iso-topic mass of 69Ga is 68.9257. The exact isotopic mass of 71Ga is 70.9249.) (2) The element carbon (C) exists in two isotopic forms with the following abundances: 98.89% 12C and 1.11% 13C. Calculate the atomic mass of carbon.arrow_forwardAtoms of each of the following elements are essential for life. Give the group name for the following elements:(a) chlorine(b) calcium(c) sodium(d) sulfurarrow_forward(a) How many elements are found in period 4 in the periodic table? (b) How many elements are found in group 4A (or 14)?arrow_forward
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