Multiple Choice
How many valence electrons does a neutral atom of chlorine possess?
5
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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 does phosphorus (P) have?
A
7
B
3
C
5
D
8
Verified step by step guidance1
Identify the element in question, which is phosphorus (P).
Determine the group number of phosphorus in the periodic table. Phosphorus is in group 15 (or group V in older notation).
Recall that the group number for main-group elements corresponds to the number of valence electrons for that element.
Since phosphorus is in group 15, it has 5 valence electrons.
Therefore, the number of valence electrons in phosphorus is 5.
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