The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of :

The atomic number of an element is 16. Predict its valency

The atomic number of an element variable valency.

The atomic number of an element X is 8 and that of element Y is 12. Write down the symbols of the ions you would expect to be formed from their atoms.

The atomic number of an element which shows a valency of +3 is

The atomic number of an element X is 16. (b) What will be the valency of X ?

The atomic number of an element is 15. Hence, it will show a valency of

Atomic number of an element is 16. State The number of valence electrons in the element