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Assertion B(2) molecule is diamagnetic ...

Assertion `B_(2)` molecule is diamagnetic
Reasoning The highest occupied molecular orbital is of sigma type .

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
D
In `B_(2)`, total number of electrons `= 10 B_(2) rarr sigma (1s)^(2) sigma^(**)(1s)^(2) sigma (2s)^(2) sigma^(**)(2s)^(2) sigma (2p_(x))^(1) pi (2p_(y))^(1)` Presence of unpaired electron shows the paramagnetic nature. The highest occupied molecular orbital is of `pi`-type.
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