Multiple Choice
How many total valence electrons are present in a molecule of H_2O?
3
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many valence electrons do the alkaline earth metals possess?
A
4
B
1
C
8
D
2
Verified step by step guidance1
Identify the group of alkaline earth metals in the periodic table. They belong to Group 2.
Recall that the group number for main group elements corresponds to the number of valence electrons for those elements.
Since alkaline earth metals are in Group 2, they have 2 valence electrons.
Understand that valence electrons are the electrons in the outermost shell that participate in chemical bonding.
Therefore, alkaline earth metals possess 2 valence electrons.
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