Question

Using VSEPR theory, predict the species which has square pyramidal shape? * 1) 1) SnCl2
2) CC14
3) SO3r
4) BrF5​

Answer 1

Answer:

Explanation:

Z = 1/2( valency of central atom + monovalent atoms + charges).

1) Z = 1/2(4+2) = 3

2) Z = 1/2(4+4) =4

3) Z = 1/2(6) = 3

4) Z = 1/2(7+5)=6

Since Z=6 represents square pyramidal 4 is the answer

Answer 2

Correct answer is Option (4) BrF₅

VSEPR theory is valence shell electron pairing repulsion theory which is used to predict the shapes of the molecules

Explanation:

1) SnCl₂  Structure is trigonal bipyramidal in shape or V shape. It is due to the presence of a lone pair of electrons as per VSEPR theory.

2 )CCl₄  Structure is tetrahedral  It is classified as a polyhalogenated organic compound where it consists of carbon atom is attached to one of the halides as a functional group.

3) SO₃ - Structure is bent shaped or trigonal pyramidal or trigonal planar, where the bond angle is 120°C

4) BrF₅ Structure is square pyramidal and electron geometry is octahedral. As the central atom has five bonds connected with fluorine atoms. Each fluorine is F-Br-F has an angle of 90°C in the same plane

Answer is Option (4) BrF₅