(c)
$CF_{4},SF_{4}$
[image:4_image197.emf]
$\therefore$ Both have different structure.
$BF_{3},PCl_{3}$
[image:4_image198.emf]
$\therefore$ Both have different structure.
$XeF_{2},\ CO_{2}$
[image:4_image199.emf]
$\therefore$ Both have different structure.
$PF_{5},IF_{7}$
[image:4_image200.emf]
$\because$ Both have linear structure.
$\therefore$ They have same structure.