Write the expected formulas for the hydrides of 4^th period elements. What is the trend in the formulas? In what way the first two members of the series different from the others?

Hydrogen peroxide can function as an oxidising agent as well as reducing agent. substantiate this statement with suitable examples.

What are isotopes? Write the names of isotopes of hydrogen.

Explain the exchange reactions of deuterium.

Mention the uses of deuterium.