CAIE IGCSE Chemistry 2.2.1 Structure of the atom as a central

Practise describing atoms as a nucleus with protons and neutrons, surrounded by shell electrons, using statements and data tables.

Exam points

select correct statements about the nucleus, electron shells and where most mass is found
use proton and electron counts to decide whether a particle is an atom or an ion

[Maximum number: 2]

This question is about elements X, Y and Z.

An atom of element X is represented as ${ }_{16}^{34} \mathbf{X}$ .

Name the different types of particles found in the nucleus of this atom of X.

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