Determine how many valence electrons and if it is neutral
1s2, 2s2, 2p3
1s2, 2s2, 2p6
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d6
AR 4s2, 3d5
Kr 5s2 4d10, 5p5© BrainMass Inc. brainmass.com March 21, 2019, 12:12 pm ad1c9bdddf
Valence electrons refer to the electrons in the outer most shell (including orbitals)
in first case, the outer shell refer to n =2 ...
Determination of valence electrons for the given electronic configuration are determined.