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The number of valence electrons for various elements, including o, p, v, ca, xe, hg, te, cl-, i5+, xe2+, zn2+, ge4+, tc4+, sb3+, and o-.
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2021/2022
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- How many valence electrons do the following contain?
(a) O
O ([He] 2s^2 , 2p^4 ) = 6
(b) P
P ([Ne] 3s^2 , 3p^3 ) = 5
(c) V
V ([Ar] 4s^2 , 3d^3 ) = 5
(d) Ca
Ca ([Ar] 4s^2 ) = 2
(e) Xe
Noble gas therefore 0 valence electrons
(f) Hg
Hg ([Xe] 6s^2 , 4f^14 , 5d^10 ) = 2
(g) Te
Te ([Kr] 5s^2 , 4d^10 , 5p^4 ) = 6
(h) Cl-
Noble gas configuration therefore 0 valence electrons
(i) I5+
I5+^ ([Kr] 5s^2 , 4d^10 ) = 2
(j) Xe^2 +
Xe^2 +^ ([Kr] 5s^2 , 4d^10 , 5p^4 ) = 6
(k) Zn2+
Noble gas configuration therefore 0 valence electrons
(l) Ge4+
Noble gas configuration therefore 0 valence electrons
(m) Tc4+
Tc^4 +^ ([Kr] 4d^3 ) = 3
(n) Sb3+
Sb^3 +^ ([Kr] 5s^2 , 4d^10 ) = 2
(o) O-
O-^ ([He] 2s^2 , 2p^5 ) = 7
(p) Nb^3 +
Nb^3 +^ ([Ar] 4d^2 ) = 2