Chemistry 9701 · AS & A Level · The Periodic Table: chemical periodicity

The Periodic Table: chemical periodicity — practice question

Z is an element with a giant structure. The chloride of Z reacts with water to form a solution whose pH is below 5. Which row gives two elements that could be Z?

Aaluminium, magnesium
Baluminium, silicon
Cphosphorus, magnesium
Dphosphorus, silicon

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