First slide

General Characteristics & Uses of Actinoids

Question

Correct statements among the following are
A) Actinoids show variable oxidation states
B) Highest oxidation state shown by actinoids in their compounds is +6
C) All actinoids are synthetic elements
D) Actinoids react with both acids and alkalies

Moderate

A

A, C only
B

C, D only
C

A only
D

B, D only

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

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