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Correct statements among the following are
A) Actinoids show variable oxidation states
B) Highest oxidation state shown by actinoids in their compounds is +7
C) All actinoids are radio active elements
D) Actinoids react with acids and alkalies

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A, B only

A, B, C, D

C, D only

A, B, C only

answer is D.

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Detailed Solution

A) Actinoids show variable oxidation states due to a very small energy difference between 7s, 6d and 5f electrons.

B)Np and Pu exihibit maximum oxidation state of +7 in their compounds

C) Actinoids from Z=95 -103 are synthetic elements. Z> 82….are all radioactive elements

D)Actinoids are truely metallic, they react with acids but cannot react with alkalies.

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