Nitrogen

The product obtained when $\mathrm{Li}$ reacts with nitrogen is 

At elevated temperatures, nitrogen reacts with highly electropositive metals to form ionic compounds.

Complete the following equation for the reaction of nitrogen with $\mathrm{Li}$:

$6\mathrm{Li}+{\mathrm{N}}_2\to 2{\mathrm{Li}}_3$_____.

Give two examples to show the reaction of nitrogen with metals.

Nitrogen does not react with oxygen at ambient temperatures.

What is the product obtained when nitrogen reacts with oxygen? 

Give two examples to show the reaction of nitrogen with non-metals.

Give reasons for the following:

The solubility of nitrogen in water is less. 

Nitrogen is a colourless, odourless and tasteless metallic gas.

Write any two physical properties of nitrogen.

Nitrogen occurs in the combined state in the form of minerals like nitre and chile saltpetre.

How does nitrogen occur in the environment?

The major part of the air which does not support combustion is

Match the column I with column II and select the correct answer by choosing an appropriate option.

Some bacteria have the ability to 'fix' nitrogen. This means they