Draw the sketch of Rutherford’s α- particle scattering experiment.

Define the following:

(a) Atomic number

(b) Atomic mass

(c) Isobars.

(a) Draw the sketch of Bohr ’s model of an atom.

(b) Draw the sketch of Thomson’s model of an atom.

Draw the atomic structure of the following elements:

Sodium atom and Sodium Ion

Draw the atomic structure of the following elements:

Chlorine atom and Chloride ion