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JEE Main 20211 SeptemberEvening Shift
Exam
JEE Main
Year
2021
Date
1 September
Shift
Evening Shift
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

JEE Main 2021 · 1 September · Evening Shift · Chemistry · Chemical Bonding and Molecular Structure

The spin-only magnetic moment value of B _ 2 ^ + species is × 10 ^...

The spin-only magnetic moment value of B2+{B}_{2}^{+} species is ×10−2BM\times {10}^{- 2}BM (Nearest integer)

[Given :3=1.73][ \text{Given :}\sqrt{3} = 1 . 73 ]

Correct answer

0

Step-by-step solution

InB2number of electron+=9\text{In}{B}_{2} \text{number of electron} + = 9

B2=+(σ1s)2(σ∗1s)2(σ2s)2(σ⋆2s)2(π2px=1π2py0),{B}_{2} = + ( \sigma1s{)}^{2}{\left({\sigma}^{*}1s\right)}^{2} ( \sigma2s{)}^{2}{\left({\sigma}^{⋆}2s\right)}^{2}\left(\pi2{p}_{x} = 1 \pi2{p}_{y}^{0}\right),

so unpaired electron =1= 1

μ=n(n+2)B\mu = \sqrt{n ( n + 2 )}B

μ=3B.M.=1.73=173×10−2B.M\mu = \sqrt{3}\text{B.M.} = 1 . 73 = 173 \times {10}^{- 2}\text{B.M}

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