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Assertion: The highest oxidation state o...

Assertion: The highest oxidation state of Os is +8.
Reason: Osmium is a 5d-block element.

A

If both (A) and (R) are correct, but (R) is not the correct explanation of (A).

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A)

C

If (A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
The electronic configuration of Os is `[Xe] 6s^(2) 4f^(14)5d^(6) 6s^(2)`. It has 8 electrons in the valence shell `(5d^(6) 6s^(2))` . It has the highest oxidation state of+8.
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Knowledge Check

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