The X -X bond length is 1 ∘A and Y - Y bond length is 1.54∘A. If electronegativities of 'X' and 'Y' are 3.0 and 2.0 respectively, the X - Y bond length is likely to be
A
1.08∘A
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B
1.18∘A
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C
1.28∘A
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D
0.08∘A
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Solution
The correct option is B1.18∘A Atomic radius of X=Bond length2=12=0.5∘A
Atomic radius of Y=1.542=0.77∘A
Hence,
using Stevenson equation, X - Y bond length = 0.5 + 0.77 - 0.09 × (3-2) =1.18∘A