Comlete the following table:
The relative atomic masses of some elements in the chart below are given. You have to find the relative atomic masses of the others.

The fractional atomic mass of an element is due to

The atom having the smallest atomic mass .

Comlete the following table: Make a list of elements in the mono-atomic and in the di-atomic molecular state.

State the laws/ Define Isotopes have same atomic masses

Answer the following questions: There are some vacant places in the Mendeleev's periodic table. In some of these places the atomic masses are seen to be predicted. Enlist three of these predicted atomic masses along with their group and period.

Atoms have a mass of the order______

Solve the examples Following are atomic masses of a few elements in Daltons and the molecular formulae of some compounds. Deduce the molecular masses of those compounds. Molecular formulae: AlCl_3 (Atomic masses: H=1, O=16, N=14, C=12, Na=23, Cl=35.5, K=39, Mg=24, Al=27, Ca=40, P=31, S=32)

Solve the examples Following are atomic masses of a few elements in Daltons and the molecular formulae of some compounds. Deduce the molecular masses of those compounds. Molecular formulae: NaCl (Atomic masses: H=1, O=16, N=14, C=12, Na=23, Cl=35.5, K=39, Mg=24, Al=27, Ca=40, P=31, S=32)

Solve the examples Following are atomic masses of a few elements in Daltons and the molecular formulae of some compounds. Deduce the molecular masses of those compounds. Molecular formulae: MgCl_2 (Atomic masses: H=1, O=16, N=14, C=12, Na=23, Cl=35.5, K=39, Mg=24, Al=27, Ca=40, P=31, S=32)

Solve the examples Following are atomic masses of a few elements in Daltons and the molecular formulae of some compounds. Deduce the molecular masses of those compounds. Molecular formulae: HNO_3 (Atomic masses: H=1, O=16, N=14, C=12, Na=23, Cl=35.5, K=39, Mg=24, Al=27, Ca=40, P=31, S=32)