1.

How many molecules or ions have minimum tow lone pairs on the centre atom ? `{:(H_(2)O,S_(4),I_(3)^(-),XeF_(3)^(-)),(XeF_(4),XeO_(2)F_(2),CIF_(3),NO_(3)^(-)):}`

Answer» Correct Answer - 5
`(i) underset("2 lone pair") underset(darr)(H_(2)ddot(H_(2)"O:")" " (ii) underset("1 lone pair")underset(darr)(":"SF_(4)) " " (iii) underset("3 lone pair")underset(darr)(underset(..)(":"ddotI^(Theta))) " " (iv) underset("2 lone pair")underset(darr)(":"ddot(X)eF_(5)^(Theta))`
`(v) underset("2 lone pair")underset(darr)(":"ddot(X)eF_(4))" " underset("1 lone pair")underset(darr)(":"XeO_(2)F_(2))" " (vii) underset("2 lone pair")underset(darr)(":"ddotCIF_(3))" " (viii) underset("0 lone pair")underset(darr)(NO_(3)^(-))`


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