Question

The atom of an element X contains 17 protons, 17 electrons and 18 neutrons wheareas 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 ?

Answer 1

Correct Answer - (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)