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6.1 Atomic structure and isotopes

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Question 14

The table gives the nuclear notation for four nuclei, P, Q, R and S. $X\mathrm{X}$ is used in place of each element symbol.

Nucleus	Nuclear notation
P	$1632X{}^{32}_{16}\mathrm{X}$
Q	$1634X{}^{34}_{16}\mathrm{X}$
R	$1734X{}^{34}_{17}\mathrm{X}$
S	$1836X{}^{36}_{18}\mathrm{X}$

What is the total number of neutrons in the two nuclei that are isotopes of each other?

[1]

35 neutrons

34 neutrons

66 neutrons

32 neutrons

Markscheme

6.1 Atomic structure and isotopes Questions

GCSE
Physics
6.1 Atomic structure and isotopes

103 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes, covering 6.1.1 Structure of the atom, 6.1.2 Isotopes: atomic and mass number, 6.1.3 Sub-atomic particles: masses and charges, and 6.1.4 Electron orbits and energy changes. Each one has a worked solution and a mark scheme showing where the marks go.

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