Question

Which one of the following statements is false ?

1. Because of the compact nature of oxygen atom, it has less negative electron gain enthalpy than sulphur.          2. Next to fluorine, oxygen has the highest electronegativity value amongst the elements (exclude zero group).          3. There is large difference in the melting and boiling points of oxygen and sulphur because oxygen exists as diatomic molecules (O2) where as sulphur exists as polyatomic molecules (S8)          4. None​

Answer 1

Answer:

4

Explanation:

Answer 2

Answer:

3 option is conceptually wrong.

Explanation:

Sulphur has high melting and boiling point because lattice bonds between sulphur molecules are stronger than than the lattice bonds between oxygen molecules. Oxygen has melting point of -182 °C while ozone gas has melting point of -192 °C. The melting and boiling point is a measure of intermolecular binding, rather than the size of molecules.

For example, hexane (C6H14) has lower boiling point than water (H2O).

So, 3rd option is wrong.