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-p-Block elements - I — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
The incorrect statement regarding $'X'$ in given reaction is $B{F_3} + LiAl{H_4}\xrightarrow{{Ether}}\left( X \right) + LiF + Al{F_3}$
  • A
    Twelve electrons are involved in bonding
  • B
    Four, two centre-two electron bonds
  • C
    Two, three centre-two electron bonds
  • ✓
    $X$ does not react with $NH_3$
✓

Answer

Correct option: D.
$X$ does not react with $NH_3$
d
$B{F_3} + LiAl{H_4}\xrightarrow{{Ether}}\mathop {{B_2}{H_6}}\limits_{(x)}  + LiF + Al{F_3}$

$NH_3$ can react with $B_2H_6,$

${B_2}{H_6} + 2N{H_3}\xrightarrow{{warm}}{[B{H_2}.2N{H_3}]^ + }.{[B{H_4}]^ - }$ $\xrightarrow{{200{\,^o}C}}{B_3}{N_3}{H_6}$ (Inorganic benzene)

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