. Write the electronic configuration for the excited calcium atom that has 1 val

Question

. Write the electronic configuration for the excited calcium atom that has 1 valence electron promoted to the next higher energy orbital.

2. Determine the total orbital angular momentum symbols (L values) for the valence electrons in question 1.

3. Determine the total spin angular momentum values (S values) for the valence electrons in question 1.

4. Write the Term Symbols that arise for the valence electrons in question 1.

5.   Determine the different total angular momentum values (J values) and include these in the symbols for the States that are generated fromthe valence electrons in question 1.

Explanation / Answer

The atomic number for Ca is 20. The ground state electronic configuration is given by

Ca(Z=20) --1s2 2s2 2p6 3s2 3p6 4s2

The electronic configuration for first excited state is

Ca (Z=20) -- is 1s2 2s2 2p6 3s2 3p6 4s1 4p1

Orbital angular momentum quantum number = l = +1

Spin angular momentu quantum number = s = + 1/2

2s + 1 = 2(1/2)+1 = 2

L = 1 = P

Term symbol is : 2P

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