Question

why hydrogen is dual character nature ​

Answer 1

Answer:

Hydrogen has a dual nature due to the fact it only has a single electron in its outer shell. This means that a hydrogen atom can easily gain an electron to create a full outer shell ,like a typical halogen, or loose an electron ,like an alkali metal.

Answer 2

Answer:

Hydrogen has the simplest electronic configuration of one. In group 1 it loses one electron and in group 17 it gains one electron.