31.

Give a reason for the following:

Inert gases do not form ions.

Give a reason for the following:

Ionisation potential increases across a period, from left to right.

Give a reason for the following:

Alkali metals are good reducing agents.

Give a reason for the following:

The conductivity of dilute hydrochloric acid is greater than that of acetic acid.

Name the gas that is produced in the following cases:

Sulphur is oxidized by concentrated nitric acid.

Name the gas that is produced in the following cases:

The action of dilute hydrochloride acid on sodium sulphide.

Name the gas that is produced in the following cases:

Action of cold and dilute nitric acid on copper.

Name the gas that is produced in the following cases:

At the anode during the electrolysis of acidified water.

Name the gas that is produced in the following cases:

A reaction of ethanol and sodium.

What do you understand by a lone pair of electrons?