Question

Part A
Using the VSEPR model, the molecular geometry of the central atom in KrF2 is ________.

Answer 1

The molecular geometry of the central atom in KrF2 (krypton difluoride) using the VSEPR model is linear, with a bond angle of 180° and a trigonal bipyramid arrangement with three missing equatorial vertices.

Step-by-step explanation:

Using the VSEPR model, the molecular geometry of the central atom in KrF2 is linear. Krypton difluoride (KrF2) is similar to xenon difluoride (XeF2) and beryllium fluoride (BeF2) in which the central atom has two bonds and no lone pairs.

In KrF2, like XeF2 and BeF2, the molecular geometry is determined by the repulsion of electron pairs, which arrange themselves as far apart as possible, resulting in a linear molecular geometry with a bond angle of 180°.

The central krypton atom is surrounded by two fluorine atoms and three pairs of nonbonding electrons, which assume the arrangement of a trigonal bipyramid with three missing equatorial vertices, analogous to the structure of XeF2.