Question

What is vanlency ? From where it has been derived?

Answer 1

Answer:

Valency is tendency to react or combining capacity of an atom. The tendency to lose or gain electrons is called Valency of an atom. It can found by how many atoms does it need to achieve near inert gas like electronic configuration.

Sir Edward Frankland was one of the foremost English chemists of his day. He laid the foundation of modern structural chemistry through his discovery of the theory of valence, which states that atoms come together to make chemical compounds in regular ratios.

Answer 2

Description in chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. The concept of valence was developed in the second half of the 19th century and helped successfully explain the molecular structure of inorganic and organic compounds.