Question

how to find valency of elements​

Answer 1

Answer:

To find the valency of an element, it is absolute that we must know the atomic number of that element.

For example, for the element Carbon ⚛️

the atomic number is 6

Convert into electronic configuration:. 2, 4

Consider the final shell alone. Here 4️⃣ so Subtract 4 from 8️⃣

the answer is 4.

Thus, the Valency is 4

For elements with valence electrons 4 and <4 the Valency is the valence number itself. For example Lithium ⚛️ the valence shell is 1. So Valency is 1️⃣

For elements with valence electrons >4, subtract it from number 8. For example Fluorine ⚛️ the Valency is 2,7 and the valence shell numner is 7. Subtracting from 8 we get 1. so Valency is 1️⃣.

For elements in the Oxygen group, it is not the same. For example Oxygen has 2,6 . But the valence can be 6 or 2 according to the situation.

Hope you understood

Answer 2

Explanation:

I AM ATTACHING A TRICK

MARK AS BRAINLIST HEARTILY