Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table

Atomic structure and the Periodic Table — practice question

Atoms are made up of particles named electrons, neutrons and protons.
(a)[3]

Fill in the table.

(b)[3]

In the ion shown, how many electrons, neutrons and protons are present? $^{44}_{20}\text{Ca}^{2+}$ number of electrons number of neutrons number of protons

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: electron: found around the nucleus, relative mass 1/1840, relative charge -1

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