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The hybridisation of the central atom will change when

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The hybridisation of the central atom will change when
A. `NH_(3)` combined with `H^(+)`
B. `H_(3)BO_(2)` combined with `OH`
C. `NH_(3) forms NH_(2)`
D. `H_(2)O` combines with `H^(+)`
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Correct Answer - b
`B(OH)_(3)+OH^(-) rarr B(OH)_(4)`
`sp^(2) sp^(3)`
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