Give an account of nature of hydrides of `15^(th)` group elements.

Give an account of mRNA.

The least stable hydride of 15th group elements is

Give an account of causes of deforestation.

Why is BiH3 the strongest reducing agent among all the hydrides of group 15 elements ?

In the light of metallic bonding account for the following properties of group 2 elements. a. These are harder than alkali metals b. These are good conductors of heat and electricity.

Give a brief account of oogenesis.

Give one example of covalent hydrides.

Give an account of pre-fertilisation events?

NH_(3) is soluble in water whereas other hydrides of group 15 elements are insoluble in water. Why?