Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table

Atomic structure and the Periodic Table — practice question

Fill in the table so that you can work out the numbers of protons, electrons and neutrons in the boron atom and chloride ion shown, then identify the atom or ion in the final row.
(main)[5]

Complete the table by filling in the missing values.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “B: 5 protons and 6 neutrons” …

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