Which of the following pairs of elements show similar set of oxisation state?

Options

A. `O^(15),O^(18)`
B. `Na,K`
C. `C, Be`
D. `Zn,Rb`

Answer

A, B

Explanation

`O^(16),O^(18): -2, -1,+1,+2`
`Na, K: +1`
`{:(C: +4 "to" -4,,Be:+2),(Zn:+2,,Rb:+1):}`