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Chemistry

Answered

which of these elements has two valence electrons?

a. hydrogen (H)
b. barium (Ba)
c. nitrogen (N)
d. krypton (Kr)
e. bromine (Br)

Answer :

ANGELCHARQUENO2874GO ANGELCHARQUENO2874GO

Hydrogen only has 1 electron so not A.
Barium has 2 valence electrons so answers B!

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