Question

Elements with `Z =107, 108` and `109` have been made recently. Indicate the groups to which they belong.

Answer 1

Correct Answer - `7,8` and `9` group respectively
`Z =107`, general configuration for the last two shells is
`6s^(2) 6p^(6) 6d^(5), 7s^(2)` i.e. `(n-1)d^(5), n s^(2)` type.
So, element `Z = 107` belong to group `7` and elements `Z = 108` and `109` belong to groups `8` and `9` respectively.