Question

State two examples in each case and write their chemical formulae:
a) Molecules having same kind of atoms only.
b) Molecules having two different kinds of atoms.
c) Molecules having three different kinds of atoms.
Ans should be wright if ans wrong tomorrow is your bad luck
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Answer 1

1) Molecules have the same kind of atoms only are Hydrogen[$H_{2}$],

Oxygen[$O_{2}$], etc.

2.)Molecules having two different kinds of atoms are water [$H_{2}O$],

methane [$CH_{4}$], etc.

3.)Molecules having three different kinds of atoms are

• Calcium Carbonate [$CaCO_{3}$] = It has three different elements as Calcium, Carbon and.
• Sulfuric Acid [$H_{2}SO_{4}$] = It has three different elements as Hydrogen, Sulphur, and Oxygen.
• Nitric acid [$HNO_{3}$] = It has three different elements as Hydrogen, Nitrogen, and Oxygen.