Which is the smallest atom? A. Rubidium (Rb) B. Lithium (Li) C. Potassium (K) D. Sodium (Na)?
回答 (2)
2016-11-16 4:38 pm
All of the four elements belong to Group IA of the Periodic Table.
Each rubidium (Rb) atom has 5 electronic shells.
Each lithium (Li) atom has 2 electronic shells.
Each potassium (K) atom has 4 electronic shells.
Each sodium (Na) atom has 3 electronic shells.
Therefore, lithium (Li) is the smallest atom because it has the smallest number of electronic shells.
The answer: B. Lithium (Li)
Each rubidium (Rb) atom has 5 electronic shells.
Each lithium (Li) atom has 2 electronic shells.
Each potassium (K) atom has 4 electronic shells.
Each sodium (Na) atom has 3 electronic shells.
Therefore, lithium (Li) is the smallest atom because it has the smallest number of electronic shells.
The answer: B. Lithium (Li)
2016-11-16 4:34 pm
B. Lithium (Li)
收錄日期: 2021-05-01 21:18:46
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