Write the charge and full ground-state electron

Solution 55P:

Here, we are going to write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by each element.

Step 1: (a) Cl

The atomic number of Cl (Z) = 37

The condensed ground-state electron configurations of Cl is 1s22s22p63s23p5

Thus, Cl has seven valence electrons.Therefore, Cl can easily accept one electron to attain the stable electronic configuration of Argon (Ar) having charge Cl- ion.

Cl (1s22s22p63s23p5)+ e-Cl-(1s22s22p63s23p6)

Therefore, it is found that, Cl forms Cl- ion.

Thus, the ground-state electron configurations of Cl- is 1s22s22p63s23p6.