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Which of the following statement is/are ...

Which of the following statement is/are INCORRECT?

A

In diborane bridge `B-H` bonds are longer than terminal `B-H` bond

B

In trisilyphosphine effective `p_(pi)-d_(pi)` back bond exist

C

Methanol is more acidic than silanol according to arrhenius acid base concept

D

There are two `p_(pi)-d_(pi)` bonds are present in `SO_(2)` molecule

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