Compound 'X' consists of only molecules. 'X' will have —

1. A Crystalline hard structure
2. A low melting and boiling point
3. An ionic bond
4. A strong force of attraction between it's molecules.

The molecule which contains a triple covalent bond is:

1. ammonia
2. methane
3. water
4. nitrogen

Give a reason why covalent compounds exist as gases, liquids or soft solids?

Bonding in which —

1. CCl₄
2. H₂
3. HCl
4. NH₄Cl

— involves coordinate bonding.