State two examples in each case and write their chemical formulae:
a) Molecules having one kind of atoms only.
b) Molecules having two different kinds of atoms.
c) Molecules having three different kinds of toms.
a) O2 , Cl2
b)HCl , AlBr3
c)H2SO4 , C6H12O6
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b)HCl , AlBr3
c)H2SO4 , C6H12O6
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