Consider the following structures and calculate value of ( $P^{2} - Q^{2}$ )
where P = Total number of correct structure representation
Q = Total number of incorrect structure representation

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Solution

In TBP geometry, more electronegative atom will try to accommodate axial bond while the lone pairs and double bonds will try to accommodate equitorial bond.
In octahedral geometry, it is preferable to put lone pairs at the exact opposite position to each other.

$P = 4, Q = 3 ∴ (P^{2} - Q^{2}) = 16 - 9 = 7$

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(P^{2} - Q^{2})

The total number of p-bond electrons in the following structure is :

(i) I C I (i i) I B r (i i i) I C I_{3} (i v) S F_{4}

(v) B r F_{3} (v i) I F_{3} (v i i) B r F_{5} (v i i i) I F_{7}

[\frac{P^{2} - Q^{2}}{R + S}]

P :

Q :

R :

S :

Y

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