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Which elements have 1 valence electron?
a. group 1
b. group1
c. group4
d. group8
Which elements have 1 valence electron?
a. group 1
b. group1
c. group4
d. group8
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Answer:
A.
Explanation:
A: Any element in group 1 has just one valence electron. Examples include hydrogen (H), lithium (Li), and sodium (Na). Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons). Examples include neon (Ne), argon (Ar), and krypton (Kr).