Discuss the general properties of nitrogen family under the following heads :

Discuss the properties of nucleus.

Write the general properties of gases.

Write the general properties of solids.

Write the general properties of liquids.

Name all the elements of nitrogen family.

Discuss any four properties of a magnet.

Describe the process of decomposition of detritus under the following heads : Fragmentational leaching, catabolism, humification and mineralization.

Discuss the important properties of interstitial hydrides.

Explain the general properties of solid covalent compounds ?

What type of hydrides are formed by group 15 elements. Discuss their characteristics under the following heads. (i) Thermal stability (ii) Basic character (iii) Reducing character (iv) Bond angles (v) Boiling points.