What is meant by the symbol of an element ? Explain with examples.

What is the symbol of element Lead?

(a) What is the significance of the symbol of an element ? Explain with the help of an example. (b) Explain the significance of the symbol H.

What is meant by the symbol of an element? What is its significance?

What is the significance of the symbol of an element?

What is meant by thermal decomposition reaction ? Explain with an example.