which of these elements has two valence electrons? a. hydrogen (H) b. barium (Ba) c. nitrogen (N) d. krypton (Kr)<

Question

which of these elements has two valence electrons?

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

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Sigridomena 4 years 2021-07-25T03:16:06+00:00 1 Answers 24 views 0

Answers ( )

  1. thanhha
    0
    2021-07-25T03:17:51+00:00
    Reply

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

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )