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 , AlBr
c)H2SO, C6H12O
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a) H2 , O2
b) Nacl , CS2
c) CaCO3 , NaOH
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Correct answer
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