2024 · M/J · 0625/31 | Q10

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Question (10 of 11)2 marks · Practise this topic →

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Available practice: 46 of 80 marks. Parts 1(a)(iii), 2(a), 3(b), 5(b)(i), 5(b)(ii), 6(b)(i), 7(c)(ii), 8(a)(ii), 8(c), 9(b)(i), 9(b)(ii), 10(a)(i), 10(c) await marking support. Scores cover available parts only.

A nucleus of strontium-90 is represented using nuclide notation as ⁹⁰₃₈Sr.

(a)(ii)Determine the number of electrons in one atom of strontium-90.

Answer guidance

Determine Work it out from what you are given or from the figure, and show how you got there.

[1 mark]

Strontium-90 decays by emitting β-particles (beta-particles).

(b)Describe the nature of β-particles.

Answer guidance

Describe Say what happens, in order. Reasons are not required unless the question also asks why.

[1 mark]

0625/31/M/J/24Cambridge IGCSE Physics 0625 · May/June 2024 · Paper 3 variant 1 · Question 10