Question

Assertion: $N_2$ and $N{O}^{+}$ both are diamagnetic substance.
Reason: $N{O}^{+}$ is isoelectronic with $N_2$.

• A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion
• B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion
• C. If Assertion is true but the Reason is false
• D. If both Assertion and Reason are false

Answer 1

Answer: (B)

Due to the absence of unpaired electron in $N{O}^{+}$ and $N_2$, both are diamagnetic



total no. of $e^{-}$ in $NO=6+8=14$

total no. of $e^{-}$ in $N_2=7+7=14$

Thercfore, both are isoelectronic.