Write on the occurrence and important minerals of halogens

Write four important minerals of magnesium .

Write four important minerals of potassium.

Write the important minerals of the following elements of d-block : titanium, cobalt, nickel, copper, zinc and silver.

Write on the bonding and oxidation states of halogens.

Write important uses of helium.

Write the important uses of aniline

Write the important uses of ethylene.

Write any two minerals of Cu.