Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

TopicSkillDifficulty

12 questions

SA-5054-NP1-0011 markL1 FoundationCalculatorNuclides & isotopes

State the number of neutrons in a nucleus of

^{23}_{11}\text{Na}

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SA-5054-NP1-0021 markL1 FoundationCalculatorNuclides & isotopes

State the number of protons in a nucleus of

^{238}_{92}\text{U}

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SA-5054-NP1-0031 markL1 FoundationCalculatorNuclides & isotopes

State the number of electrons in a neutral atom of

^{16}_{8}\text{O}

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SA-5054-NP1-0041 markL1 FoundationCalculatorNuclides & isotopes

Isotopes of an element have

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SA-5054-NP1-0051 markL1 FoundationCalculatorAtomic structure

In the alpha-scattering experiment, most alpha particles passed straight through the gold foil. This showed that

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SA-5054-NP1-0071 markL1 FoundationCalculatorNuclides & isotopes

Carbon-14 has

6

protons. State the number of neutrons in its nucleus.

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SA-5054-NP1-0081 markL1 FoundationCalculatorAtomic structure

The overall charge of a nucleus is

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SA-5054-NP1-0091 markL1 FoundationCalculatorAtomic structure

Which particle has no electric charge?

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SA-5054-NP1-0101 markL1 FoundationCalculatorAtomic structure

A neutral atom loses

2

electrons. State the charge of the ion formed, in units of the electron charge (include the sign).

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SA-5054-NP1-0121 markL1 FoundationCalculatorNuclides & isotopes

The proton number of a nucleus is

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SA-5054-NP1-0061 markL2 StandardCalculatorAtomic structure

A very small number of alpha particles bounced back from the foil. This showed that the nucleus is

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SA-5054-NP1-0112 marksL3 ExamCalculatorAtomic structure

An atom has a diameter of about

10^{-10}

m and its nucleus has a diameter of about

10^{-15}

m. How many times larger is the atom than its nucleus?

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