Question

Given the following electronic configurations, identify how many valence electrons each atom has.

A=
Element
Electron Configuration
Number
of
Valence
Electrons
B =
C=
Sodium
(Na)
152 2s 2p 3s
А
DONE
Oxygen (0)
1s 2s 2p
B
Iron (Fe)
1s 2s 2p 3s 3p 452
306
С

Answer 1

sodium=atomic number 11 it electronic configuration is ,K=2, L=8,M=1 Valence is 1

oxygen= atomic number 8 it electronic configuration is K=2, L=6 Valence is 2

iron= atomic number 26 it electronic configuration is K= 2 L= 8,M=8 N=6 Valence 2

Answer 2

Answer: A=1

B=6

C=8

Step-by-step explanation: