O-LevelChemistryAtomic Structure5070/11 · May/June 2023 · Q211 Mark
The elements are arranged in groups and periods in the Periodic Table. Which row is correct?
Agroup determined by: the number of electrons in the outer shell, period determined by: the number of occupied shells, elements in the Periodic Table are arranged by: increasing proton number
Bgroup determined by: the number of occupied shells, period determined by: the number of electrons in the outer shell, elements in the Periodic Table are arranged by: increasing mass number
Cgroup determined by: the number of electrons in the outer shell, period determined by: the number of occupied shells, elements in the Periodic Table are arranged by: increasing mass number
Dgroup determined by: the number of occupied shells, period determined by: the number of electrons in the outer shell, elements in the Periodic Table are arranged by: increasing proton number
✓ Correct answer
A: group determined by: the number of electrons in the outer shell, period determined by: the number of occupied shells, elements in the Periodic Table are arranged by: increasing proton number
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