Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table

Atomic structure and the Periodic Table — practice question

Fig. 1.1 displays part of the Periodic Table. Use only the elements shown in Fig. 1.1 when answering the questions below. Each element symbol may be used once, more than once or not at all.
(a)[1]

Give the symbol for the element that makes up 21% of clean, dry air by volume.

(b)[1]

Give the symbol for the element whose atom has just three occupied electron shells.

(c)[1]

Give the symbol for the element whose atom has only one electron in its outer shell.

(d)[1]

Give the symbol for the element that is a grey-black solid at room temperature.

(e)[1]

Give the symbol for the element that forms an ion giving a green precipitate when aqueous ammonia is added.

(f)[1]

Give the symbol for the element used in electrical wiring because it is very ductile.

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