Find out the valencies of first 20 elements.

State the valencies of the following elements : magnesium and sodium.

What are the valencies of 1^(st) and least elements of every period in the periodic table ?

Commin salt is the common ingredient in every food item . what is the Valencies of these two elements?

If Z = 5, what would be the valency of the element?

Write the minimum and maximum valencies of elements.

If Z = 3, what would be the valency of the elements? Also, name the element?

The valence shell of transition element consists of

What is the valence of IIIA group elements ? How can you say ?

The equivalent mass of an element is 4. Its chloride has vapour density 59.25. Then the valency of the element is___________.