Molecular Bonding

Question 0

Shape of boron triflouride

Answer 0

Trigonal planar

Question 1

The electron pair repulsion theory

Answer 1

• The electron pairs in the outer shell of the central atom repel each other and end up as far apart as geometrically possible
• Lone pairs have a greater repelling power than bond pairs

Question 2

Shape of methane

Answer 2

Tetrahedral

Question 3

Shape of phosphorus pentachloride

Answer 3

Trigonal bipyramidal

Question 4

Shape of ammonia

Answer 4

Distorted tetrahedral i.e pyramidal

Question 5

Shape of water

Answer 5

V-shaped

Question 6

Hydrogen bonds

Answer 6

Electrostatic force of attraction between molecules with H-X bonds where X= N,O or F e.g hydrogen flouride, water and ammonia

Question 7

Dipole-dipole interactions

Answer 7

Electrostatic force of attraction between molecules that have a permanent dipole e.g NO

Question 8

Van der Waals forces

Answer 8

Electrostatic force of attraction between molecules with a temporary dipole i.e all molecules