Which of the following actinoids show oxidation states upto +7?

Options

A. Am
B. Pu
C. U
D. Np

Answer

B, D

Explanation

The oxidation states of the following actinoids are
(a) Americium (Z = 95), Electronic configuration = `[Rn]5f^(7)6d^(0)7s^(2)`
Oxidation states shown by Am = + 3, + 4, + 5, + 6.
(b) Plutonium (Z = 94), Electronic configuration = `[Rn]5f^(6)6d^(0)7s^(2)`
Oxidation states shown by Pu = + 3, + 4, + 5, + 6, 7.
(c ) Uranium (Z = 92), Electronic configuration = `[Rn]5f^(3)6d^(1)7s^(2)`
Oxidation states shown by U = + 3, + 4, + 5, + 6.
(d) Neptunium (Z = 93), Electronic configuration = `[Rn]5f^(4)6d^(1)7s^(2)`
Oxidation states shown by Np = + 3, + 4, + 5, + 6, + 7.