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2.1 Atomic structure

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Question 40

Four different subatomic species detected in a mass spectrometer are labelled $W$ , $X$ , $Y$ , and $Z$ . The table below shows the number of protons, neutrons, and electrons in each particle.

Particle	Protons	Neutrons	Electrons
W	17	18	18
X	12	12	10
Y	14	14	14
Z	12	14	12

Explain which particle, $W$ , $X$ , $Y$ , or $Z$ , is a positive ion.

[2]

Markscheme

2.1 Atomic structure Questions

GCSE
Chemistry
2.1 Atomic structure

87 exam-style questions on Edexcel GCSE Chemistry 2.1 Atomic structure, covering 2.1.1 Development of the atomic model, 2.1.2 Structure of the atom and subatomic particles, 2.1.3 Mass number, isotopes and relative atomic mass, and 2.1.4 Calculating relative atomic mass from isotopic abundance. Each one has a worked solution and a mark scheme showing where the marks go.

2.1 Atomic structure

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2.1 Atomic structure

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Question 40

Four different subatomic species detected in a mass spectrometer are labelled $W$ , $X$ , $Y$ , and $Z$ . The table below shows the number of protons, neutrons, and electrons in each particle.

Particle	Protons	Neutrons	Electrons
W	17	18	18
X	12	12	10
Y	14	14	14
Z	12	14	12

Explain which particle, $W$ , $X$ , $Y$ , or $Z$ , is a positive ion.

[2]

Markscheme

2.1 Atomic structure Questions

GCSE
Chemistry
2.1 Atomic structure