electron configuration?

0 ⤊

An element with the electron configuration [noble gas] ns2(n - 1)d10np2 has ____________ valence electrons.

a. 10

b. 16

c. 4

d. 2

2007-04-29 03:07:15 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

Definitely 4. Add the s and p in the outer level. The d is not outer level.

2007-04-29 03:27:17 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋

answer is four ( add the amount of electrons present in the s and p orbitals)

2007-04-29 16:02:31 · answer #2 · answered by Dr. Eddie 6 · 0⤊ 0⤋

b. 16

2007-04-29 10:23:42 · answer #3 · answered by funkyfanta 1 · 0⤊ 2⤋