Name the elements represented by the following symbols:

Hg, Pb, Au, Ag, Sn

Give the names and symbols of five familiar substances which you think are elements.

Stat the chemical symbols for the following elements:

Sodium, Potassium, Iron, Copper, Mercury, Silver

What is meant by atomicity? Explain with two examples.

What is the atomicity of the following?

(a) Oxygen

(b) Ozone

(c) Neon

(d) Sulphur

(e) Phosphorus

(f) Sodium