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Nitrogen

Among BF3,N...

Question

Among $B F_{3}, N (S i H_{3})_{3}, N (C H_{3})_{3}, O (S i H_{3})_{2}, C F_{3}, C C l_{3}^{-}$ the number of molecules or molecular ions which have back bonding is:

1

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3

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4

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a l l

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Solution

The correct option is A $1$
$B F_{3}$ has trigonal planner structure in which B has empty P-orbital.Hue,F acts as lewis base and donater its lone pair to boron and it results in back bonding.

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I . C O

I I . P C l_{5}

I I I . B F_{3}

I V . B C l_{3}

V . S i H_{4}

V I . S i F_{4}

V I I . C C l_{4}

V I I I . B e C l_{2}

I X . N (S i H_{3})_{3}

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B C l_{3}, S F_{4}, N F_{3}, P F_{3}, N (S i H_{3})_{3}, C l O_{3}^{+}, X e O_{4}, X e O F_{2}, S O C l_{2}

p π - d π

⊖ C H_{2} - C H_{3}

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