VSPER theory and VB theory

Which of the following species has 120° bond angles?

• (a) NCl₃

• (b) PH₃

• (c) ClF₃

• (d) BCl₃

Find the molecule in which the central atom is having one lone pair of electrons

• (a) NH₃

• (b) PCl₅

• (c) H₂O

• (d) CH₄

XeF₆ is

• (a) Distorted octahedral

• (b) Tetrahedral

• (c) Octahedral

• (d) Planar

Find the molecule with the least bond angle

• (a) BeF₂

• (b) CH₄

• (c) NH₃

• (d) H₂O

What is the shape of the molecule NH₃?

• a) Square pyramidal

• b) V-shape

• c) Triagonal pyramidal

• d) Tetrahedral

Which of the following molecules geometry is true?

• a) BrF₅ – Triagonal pyramidal

• b) ClF₃ – T-shape

• c) PCl₅ – See-saw

• d) SF₄ – Triagonal bipyramidal

What is the shape of water?

• a) Triagonal

• b) Triagonal bipyramidal

• c) Bent

• d) Square planar

The angle between two bonds in a linear molecule is _______

• a) 108°

• b) 180°

• c) 74.5°

• d) 90°

The bond enthalpy of ___________ molecule is 435.8 kJ mol-1.

• a) Hydrogen

• b) Oxygen

• c) Nitrogen

• d) Helium

The strength of covalent ___________ extent of overlapping of orbitals.

• a) may be or may not be related

• b) is independent on

• c) is dependent on

• d) is not related to