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Assertion (A) The highest oxidation stat...

Assertion (A) The highest oxidation state of osmium is +8.
Reason (R ) Osmium is a 5d-block element.

A

Both assertion and reason are true, and reason is the correct explanation of the assertion.

B

Both assertion and reason are true but reason is not the correct explanation of assertion.

C

Assertion is not true but reason is true.

D

Both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
Assertion and reason both are correct but reason is not the correct explanation of assertion.
The highest oxidation state of osmium is +8 due to its ability to expand their octet by using its all 8 electrons (2 from 6s and 6 from 5d).
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