Nitrogen has a triple bond between 2 atoms. So nitrogen is a very stable gas.
Nitrogen is very important in fertilisers.
the concentraction of nitrogen in the air is very high
Nitrogen is very important to many crops; without nitrogen the production is decreased.
Nitrogen is not very reactive
Nitrogen is reactive. But not very reactive because of the amount of electrons it has.
Nitrogen triiodide - a very unstable and sensitive contact explosive.
Nitrogen can be obtained as a solid at very low temperature, under -210 0C. At room temperature nitrogen is a gas.
After my opinion nitrogen hasn't any unusual and very specific properties.
Nitrogen is kept in places to keep away air as it is very less reactive.
make the temperature very cold and it will liquidify
No, they have very low melting.
There are very strong triple covalent bonds between the two nitrogen atoms in diatomic N2 gas. Large amount of energy is needed to overcome this bond, thus nitrogen is fairly inert and unreactive.