Question

Without looking at the periodic table, write the expected outer electron configuration for each of the following elements. (Hint: See Sample Problem C.)

a. Group 7, fourth period.
b. Group 3, fifth period.
c. Group 12, sixth period.

Answer 1

The expected outer electron configuration for Group 7, fourth period is 4s23d5. For Group 3, fifth period it is 5s24d1. For Group 12, sixth period it is 6s24f145d10.

Step-by-step explanation:

The outer electron configuration of an element can be determined by its position on the periodic table. For example, for an element in Group 7 and the fourth period, the expected outer electron configuration would be 4s23d5. In Group 3 and the fifth period, the expected outer electron configuration would be 5s24d1. And in Group 12 and the sixth period, the expected outer electron configuration would be 6s24f145d10.