Ferrous salts are more unstable compared to ferric salts. Explain in terms of their configurations. 

Colour of ferrous salts.

In comparison of ferrous salts, ferric salts are:

What is salt hydrolysis? Explain with an example.

Why is it essential to oxidise ferrous salt to ferric salt in group III?

List any four factors which determine the amount of dissolved oxygen in water. Explain in brief the harmful effects of nitrate , fluoride and arsenic salts in groundwater on humans.

Organisms that are restricted to a narrow range of salt concentration are termed

Why are diazonium salts of aromatic amines more stable than those of aliphatic amines?

How will you distinguish between ferrous and ferric salts?

Alkali metals are paramagnetic but their salts are dimagnetic. Explain.

The crystaline salts of alkaline earth metals contain more water of crystallisation than the corresponding alkali metal salts. Why?