Place the following in order of increasing x-se-x bond angle, where x represents the outer atoms in each molecule. seo2 secl6 sef2 a) secl6

SeCl₆ < SeF₂ < SeO₂

Explanation:

(A) SeO₂

The central atom has 2 bond pairs and 1 lone pair. The molecule is bent shaped which has an angle of 120°.

(B) SeCl₆

The central atom has 6 bond pairs and 0 lone pair. The geometry is octahedral in which the equatorial bonds has an angle of 90° and axial bond has an angle of 90°.

(C) SeF₂

The central atom has 2 bond pairs and 2 lone pairs. The geometry is bent shape which has an angle of approximately 105.5°.

The order is:

SeCl₆ < SeF₂ < SeO₂

i believe it is c.) 1575 j.

it would be d. henry moseley

hope this !

and sorry if i'm late. have a good rest of your day! : d