Use the periodic table to write electron configurations for each of the followin

Question

Use the periodic table to write electron configurations for each of the following elements. Represent core electrons with the symbol of the previous noble gas in brackets.

S, Ge, Y, Sb

Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. For example, [He]2s22p2 should be entered as [He]2s^22p^2.

Which of the following set of quantum numbers (ordered n, ?, m?, ms) are possible for an electron in an atom?

Check all that apply..

-2, 1, 0, -1/2 2, 1, -2, 1/2 5, 3, 0, 1/2 5, 3, 4, 1/2 2, 1, 0, 1/2 2, 2, 2, 1/2 5, 2, 1, -1/2 3, 2, 1, -1

Explanation / Answer

1)

S = [Ne]3s^2 3p^4

Ge = [Ar] 4s^23d^10 4P^2

Y = [Kr]4d^1 5S^2

Sb = [Kr] 5s2 4d10 5p3

2)

possible are

5, 3, 0, 1/2

2, 1, 0, 1/2

5, 2, 1, -1/2

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