Question

True / False

1.Formula mass of Na2Ois 62 amu.

2.Those particles which have more or less electrons than

the normal atoms are called ions.

3.Formula for sulphur dioxide is SO3

.

4.Molar mass of ethyne (C2H2

) is 26 g/mol.

5.22 gm of CO2

consists of 1 mole.

6.Number of molecules in 32 gram of oxygen is 6.02×10

23.

7.Water is an atom.

8.Formula for sulphur dioxide is SO2

.

9.Clusters of atoms that act as an ion is called polyatomic

ion.

10.Mass of 1 mole of a substance is called its formula

mass.

11. In a pure chemical compound, elements are always

present in a definite proportion by mass.​

Answer 1

Explanation:

1. True
2. True
3. False
4. True
5. True
6. False
7. True
8. True
9. False
10. False
11. True