Q18:
Cambridge IGCSE Chemistry - 0620 - Supplement Paper 2 2019 Summer Zone 1
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Topic: CH12 - THE PERIODIC TABLE
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CH12 - THE PERIODIC TABLE
Where in the Periodic Table is the metallic character of the elements greatest?[Table_1]
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Part of the Periodic Table is shown.Which element is a gas that does not form a compound with potassium?
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Which statement explains why ammonia gas, $\text{NH}_3$, diffuses at a faster rate than hydrogen chloride gas, $\text{HCl}$?
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