Multiple Choice First ionization energies (IE1) generally increase as you move up the periodic table and to the right. Why is the first ionization energy of Se lower than As? Choose the best answer from the options below. a) The element As has 3 unpaired electrons in the p orbitals. Adding one more electron in Se will pair one of the
Multiple Choice
First ionization energies (IE1) generally increase as you move up the periodic table and to the right. Why is the first ionization energy of Se lower than As? Choose the best answer from the options below.
a) The element As has 3 unpaired electrons in the p orbitals. Adding one more electron in Se will pair one of the p orbital electrons which is a slightly higher energy state and Se is then easier to ionize.
b) The element As has a filled s orbital and adding one more electron in Se will begin to fill the p orbital electrons which is a slightly higher energy state and Se is then easier to ionize.
c) The element As has a filled d orbital and adding one more electron in Se will begin to fill the p orbital electrons which is a slightly higher energy state and Se is then easier to ionize.
d) The element As has 5 unpaired electrons in the d orbital. Adding one more electron in Se will pair one of the d orbital electrons which is a slightly higher energy state and Se is then easier to ionize.
2. Use Slater's rules estimate the shielding constant (S) and the effective nuclear charge (Zeff) of Ga. (Input your answer for S and Zeff separated by a comma with no spaces. For example, if you calculate S = 4 and Zeff = 2 your answer should be submitted as 4,2)
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