Question

what is valency and how to find valency of an atom​

Answer 1

Answer:

Valency is the combining capacity of an element.

Answer 2

Answer:

Here is your answer

Explanation:

Electrons that are found in the outermost shell are generally known as valence electrons and the number of valence electrons determines the valency (or valence) of an atom.

If the number of electrons in the outer shell is between one to four, the compound is said to have positive valency. For compounds with electrons four, five, six, or seven, the valency is determined by subtracting the electron from eight. All noble gases except for Helium have eight electrons.