Some of the elements and their atomic numbers are mentioned in the following table : (i) How many valence electrons are there in the element 'R' ? (ii) What is the valency of 'P' ? (ii) Write the chemical formula of the compound formed by combining the elements ‘P' and 'Q'? (iv) Out of the two elements 'P' and 'S', which one is larger in size ?

Some of the elements and their atomic numbers are mentioned in the fol

1.	Some of the elements and their atomic numbers are mentioned in the following table : (i) How many valence electrons are there in the element 'R' ? (ii) What is the valency of 'P' ? (ii) Write the chemical formula of the compound formed by combining the elements ‘P' and 'Q'? (iv) Out of the two elements 'P' and 'S', which one is larger in size ?
Answer» SOLUTION :(i) 3. (II) 1. (iii) PQ. (iv) S.