1.

Correct order of bond length of p,q,r,s in following compound is CH_(3)-overset(O)overset(||)Cunderset((g))-O^(-) H-underset(O)underset(||(q))C-H CH_(3)overset((g))-OH .^(-)O-underset(O)overset(||)Coverset((s))-O^(-)

Answer»

`pltsltqltr`
`sltpltqltr`
`rltqltsltr`
`qltpltsltr`

SOLUTION :`CH_(3)-overset(O)overset(||)C-O^(-)harrCH_(3)-underset(O^(-))underset(|)C=O` B.O. of 'p' BOND `=(1+2)/(2)=1.5`
`H-underset(O)underset(||)C-H` (no resonance and double bond) B.O. of 'q'=2
`CH_(3)-OH` (no resonance and SINGLE bond) B.O. of 'r'=1
`.^(-)O-underset(O)underset(||)C-O^(-)harrO=underset(O^(-))underset(|)C-O^(-)=O` B.O. of 's' `=(2+1+1)/(3)=(4)/(3)=1.33`
Higher the bond order `rArr` Lesser the bond lenght
Bond lenght order `:qltpltsltr`


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