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Question
The number of electrons in the outermost shell of alkali metals is ______.
Options
1
2
3
7
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Solution
The number of electrons in the outermost shell of alkali metals is 1.
Explanation:
Alkali metals belong to Group 1 of the periodic table, which includes elements like lithium, sodium, and potassium. They all have a valence electronic configuration of (ns1). Because they possess exactly one electron in their outermost shell, they easily lose it to form univalent positive ions (M+) and achieve a stable noble gas configuration.
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