Which of the following actinoids show oxidation states upto +7?
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  1. Am
  1. Np
Explanation:
Oxidation states of the actinoids are as follows:
  1. Americium (Z = 95)
Electronic configuration = $[\text{R}_\text{n}]^5\text{f}^76\text{d}^07\text{s}^2$
Oxidation states = + 3, + 4, + 5, + 6
  1. Plutonium (Z = 94)
Electronic configuration = $[\text{R}_\text{n}]5\text{f}^66\text{d}^07\text{s}^2$
Oxidation states = + 3, + 4, + 5, + 6, + 7
  1. Uranium (Z = 92)
Electronic configuration = $[\text{R}_\text{n}]5\text{f}^36\text{d}^17\text{s}^2$
Oxidation states = + 3, + 4, + 5, + 6, + 7
  1. Neptunium (Z = 93)
Electronic configuration = $[\text{R}_\text{n}]5\text{f}^46\text{d}^17\text{s}^2$
Oxidation states = + 3, + 4, + 5, + 6, + 7
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