Question

List-I shows different radioactive decay processes and List-II provides possible emitted particles. Match each entry in List-I with an appropriate entry from List-II, and choose the correct option.

(A) P → 4, Q → 3, R → 2, S → 1

(B) P → 4, Q → 1, R → 2, S → 5

(C) P → 5, Q → 3, R → 1, S → 4

(D) P → 5, Q → 1, R → 3, S → 2

Answer 1

Correct option is (A) P → 4, Q → 3, R → 2, S → 1

• In β decay mass number decreases by 4 unit and atomic number decreases by 2 unit.
• In β^– decay mass number does not change but atomic number increases by 1 unit.
• In β⁺ decay mass number does not change but atomic number decreases by 1 unit.