객관식
How many total valence electrons are present in a neutral manganese (Mn) atom?
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Valence Electrons of Elements
객관식
How many valence electrons does cesium (Cs) have?
A
7
B
1
C
2
D
8
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검증된 단계별 안내1
Identify the element cesium (Cs) on the periodic table. Cesium is an alkali metal located in Group 1.
Recall that the group number for main-group elements indicates the number of valence electrons. For Group 1 elements, there is 1 valence electron.
Understand that valence electrons are the electrons in the outermost shell of an atom that participate in chemical bonding.
Confirm that cesium, being in Group 1, has a single electron in its outermost shell, which means it has 1 valence electron.
Therefore, the number of valence electrons in cesium (Cs) is 1.
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