Refer to the periodic table and write the predicted electron configuration for each of the following ions

Question:

Refer to the periodic table and write the predicted electron configuration for each of the following ions using core notation:

(a) Cd2+ 

(b) P3–.

Periodic Table:

2 3 4 15 6 7 3 11 Li 6.94 1 IA Na 22.99 19 37 Rb R 4 87 2 IIA Be 9.01 12 Mg 24.31 K Ca Sc 39.10 40.08 44.96 

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