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5.2.3a Radioactive decay

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Question 84

The nucleus of a radium atom contains 138 neutrons and 88 protons. It decays by emitting an $α\alpha$ -particle.

How many neutrons and how many protons remain in the nucleus when this form of radium decays?

A

$134$ neutrons, $86$ protons

B

$136$ neutrons, $86$ protons

C

$136$ neutrons, $88$ protons

D

$138$ neutrons, $86$ protons

Markscheme

5.2.3a Radioactive decay Questions

IGCSE
Physics
5.2.3a Radioactive decay

120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.

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