Radioactive decay, which can involve the emission of alpha ( $α\alpha$ ), beta ( $β\beta$ ), or gamma ( $γ\gamma$ ) radiation, is characterized as being both random and spontaneous.

Which row in the table correctly describes the meaning of these two terms?

	Random	Spontaneous
A	The decay rate is unaffected by external factors, such as temperature and pressure.	It is impossible to predict which nucleus will decay next or precisely when a given nucleus will decay.
B	It is impossible to predict which nucleus will decay next or precisely when a given nucleus will decay.	The decay rate is unaffected by external factors, such as temperature and pressure.
C	Particles are emitted in all directions with equal probability.	The process happens instantly without any time delay.
D	The decay process is triggered by a random collision with a cosmic ray.	The decay occurs without any external trigger or change in physical conditions.

Radioactive decay, which can involve the emission of alpha ( $α\alpha$ ), beta ( $β\beta$ ), or gamma ( $γ\gamma$ ) radiation, is characterized as being both random and spontaneous.

Which row in the table correctly describes the meaning of these two terms?

	Random	Spontaneous
A	The decay rate is unaffected by external factors, such as temperature and pressure.	It is impossible to predict which nucleus will decay next or precisely when a given nucleus will decay.
B	It is impossible to predict which nucleus will decay next or precisely when a given nucleus will decay.	The decay rate is unaffected by external factors, such as temperature and pressure.
C	Particles are emitted in all directions with equal probability.	The process happens instantly without any time delay.
D	The decay process is triggered by a random collision with a cosmic ray.	The decay occurs without any external trigger or change in physical conditions.

5.2.3a Radioactive decay

Question 11

Markscheme

5.2.3a Radioactive decay

Question 11

Markscheme

5.2.3a Radioactive decay

Question 11

5.2.3a Radioactive decay Questions

5.2.3a Radioactive decay

Question 11

5.2.3a Radioactive decay Questions