The atom of an element `X` contains `17` protons, `17` electrons and `18` neutrons whereas the atom of an element `Y` contains `11` protons, `11` electrons and `12` neutrons.
(a) What type of ions will be formed by an atom of element `X` ? Write the symbol of ion formed.
(b) What will be the number of (i) protons (ii) electrons, and (iii) neutrons, in the ion formed form `X` ?
(c) What type of ion will be formed by an atom of element `Y` ? Write the symbol of ion formed.
(d) What will be the number of (i) protons (ii) electrons, and (iii) neutrons, in the ions formed from `Y` ?
(e) What is the atomic mass of (i) `X`, and (ii) `Y` ?
(f) What could the elements `X` and `Y` be ?

Explanation

(a) Anion (Negative ion) ; `X^(-)` , (i) `17` , (ii) `18` , (c ) Cation (Positive ion); `Y^(+)` (d) (i) 11 , (ii) 10 , (iii) 12 (e ) (i) `35.5 u` , (ii) `23 u` , (f) X : Chlorine `(Cl)` ; Y; Sodium (Na)