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(a)
Interpretation:
The electronic configuration for given element is to be stated. The number of unpaired electrons present in an element is to be indicated.
Concept introduction:
The elements in a modern periodic table are arranged in an increasing order of their
(b)
Interpretation:
The electronic configuration for given element is to be stated. The number of unpaired electrons present in an element is to be indicated.
Concept introduction:
The elements in a modern periodic table are arranged in an increasing order of their atomic number. In the modern periodic table, the horizontal rows are known as periods, whereas vertical columns are known as groups. There are
(c)
Interpretation:
The electronic configuration for given element is to be stated. The number of unpaired electrons present in an element is to be indicated.
Concept introduction:
The elements in a modern periodic table are arranged in an increasing order of their atomic number. In the modern periodic table, the horizontal rows are known as periods, whereas vertical columns are known as groups. There are
(d)
Interpretation:
The electronic configuration for given element is to be stated. The number of unpaired electrons present in an element is to be indicated.
Concept introduction:
The elements in a modern periodic table are arranged in an increasing order of their atomic number. In the modern periodic table, the horizontal rows are known as periods, whereas vertical columns are known as groups. There are
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Chapter 3 Solutions
Chemistry for Today: General, Organic, and Biochemistry
- Write the electron configurations for the following atoms or ions: (a) B3+ (b) O (c) Cl3+ (d) Ca2+ (e) Tiarrow_forwardWhich of the following has two unpaired electrons? (a) Mg (b) Si (c)S (d) Both Mg and S (e) Both Si and S.arrow_forwardExplain why Al is a member of group 13 rather than group 3?arrow_forward
- Write electron configurations for the following elements. a. The Group III A element in the same period as 4Be b. The Period 3 element in the same group as 5B c. The lowest-atomic-numbered metal in Group IIA d. The two Period 3 elements that have no unpaired electronsarrow_forwardWhich main group atom would be expected to have the lowest second ionization energy?arrow_forwardUse the atomic radii of scandium, yttrium, lanthanum, and lutetium to answer the questions below. Explain why lutetium has a smaller atomic radius than lanthanum, even though it has a greater number of electrons. Do the atomic radii argue for the placement of La or Lu below Y in the periodic table? Explain.arrow_forward
- In one area of Australia, the cattle did not thrive despite the presence of suitable forage. An investigation showed the cause to be the absence of sufficient cobalt in the soil. Cobalt forms cations in two oxidation states, Co2 and Co3+. Write the electron structure of the two cations.arrow_forwardElement 106 has been named seaborgium, Sg, in honor of Glenn Seaborg, discoverer of the first transuraniurn element. a. Write the expected electron configuration for element 106. b. What other element would be most like element 106 in its properties?arrow_forward
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