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Chemistry 5070 · Cambridge (CAIE) O Level
Group Trends
1 past-paper question on Group Trends · examined 2021–2021.
20211 question
5070/12 · M/J · Q28 [1]Sign up to mark my answer →
The proton number of caesium is 55. Compared with lithium, the melting point of caesium is ......1...... and the reaction of caesium with water is ......2...... vigorous. The number of valence electrons in caesium is ......3...... compared to lithium. Which words correctly complete gaps 1, 2 and 3?
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