Question

in IO2F2 -let x be the total number of bond pair in the molecule y be the total number of lone pair in the molecule and z be tye total no. of 90° angle then x+y+z is​

Answer 1

this question is based on valence shell electron pair repulsion theory,

bond pair = 4

lone pair = 1/2 (Valence electrons - 8 × bond pair )

= 1/2 (1 × 7 + 2 × 6 + 7 × 2 + 1 - 8 × 4)

= 1/2 (7 + 12 + 14 + 1 - 32)

= 1/2 (34 - 32)

= 1

hence, lone pair = 1

so, hybridisation of given molecule is sp³d and hence, shape of molecule is trigonal pyramidal but in the presence of one lone pair, one bond is removed from trigonal pyramidal then shape will be like seesaw.

so, total no of 90° angle = 3

then, x + y + z = 4 + 1 + 3 = 8