Question

A certain nucleus X has a mass number 14 and atomic number 6. The nucleus X changes to Y14 after the loss of a particle.
(a) Name the particle emitted.
(b) Represent this change in the form of an equation.
(c) A radioactive substance is oxidized. What change would you expect to take place in the nature of its radioactivity? Give a reason for your answer.
[5 MARKS]

Answer 1

Part (a) : 1 Mark
Part (b) : 2 Marks
Part (c) : 2 Marks

(a) A beta particle
(b) ${}_6{X}^{14}{-}_{-1}{\beta }^0\to {}_7{Y}^{14}$
(c) Since radioactivity is nuclear phenomenon, therefore, no change takes place in the nature of radioactivity of the substance.