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The number of hybrid orbitals involved i...

The number of hybrid orbitals involved in the formation of `B_(2) H_(6),B_(3)N_(3)H_(6), BCl_(3)` are `H_(3)BO_(3)` are p, q,r & s, then the sum of (p+q+r+s) is 8y, then y = ?

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The correct Answer is:
4
`B_(2)H_(6)rarr8` [each `B-4sp^3` ]
`B_(3)N_(3)H_(6) rarr 18` [each B, N - `3sp^3` ] `B_3N_3H_6 rarr 18 ` [ each `B,N-3sp^2`]
`BCl_(3) rarr 3` [ each `B - 3sp^2` ]
`H_(3)BO_3 rarr3` [ each `B - 3sp^2`]
`P+Q+R+S implies 8+18+3+3 =32 (8y)`
`:. y = 4`
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