The name of few salts and their chemical formulae are given in the table. Complete the table adding names of more salts and write the positive ions and negative ions.

Name of salt	Chemical formula	Positive ion	Negative ion
Sodium chloride	$\mathrm{NaCl}$	${\mathrm{Na}}^{+}$	${\mathrm{Cl}}^{-}$
Magnesium sulphate	${\mathrm{MgSO}}_4$	${\mathrm{Mg}}^{2+}$	${{\mathrm{SO}}_4}^{2-}$
Calcium carbonate	${\mathrm{CaCO}}_3$	_____	_____
_____	____	_____	_____
_____	____	_____	_____