which of the following is the incorrect match for atom of element?

Options

A. `[Ar]3d^(5)4s^(2) to 4^(th)"period",6^(th)` group
B. `[Kr]4d^(10) to 5^(th" period, "12^(th)` group
C. `[Rn]6d^(1) 7s^(2) to 7^(th)` period, 3th group
D. `[Xe]4f^(14)5d^(2)6s^(2) to `6th period, 4th group

Answer

A, B

Explanation

`[Ar]3d^(5)4s^(2) to 4^(th)"period",6^(th)` group
`[Kr]4d^(10) to 5^(th" period, "12^(th)` group