Which element heads the main subgroup of the sixth group?

Nitrogen leads the main subgroup of the sixth group.

Nitrogen is essential for the chemical industry. It is used to apply fertilizers, nitric acid, nylon, dyes and explosives. To produce these products, nitrogen must first react with hydrogen to produce ammonia. This happens through the Haber process.

Nitrogen gas is also used to create a non-reactive atmosphere. It is used in a way to preserve food and electronics in the manufacture of transistors and diodes. Large amounts of nitrogen are used to anneal stainless steel and other steel products.