The Modern Atomic Theory Answers

Longhand notation:

Iron (Fe): [Ar]4s23d6

Argon (Ar): [Ne]3s23p6

Magnesium (Mg): 1s22s22p63s2

Potassium (K): 1s22s22p63s23p64s1 core electrons

Iron (Fe): [Ar]4s23d6 core electrons

Argon (Ar): [Ne]3s23p6 core electrons

Use the periodic to write the electron configuration for rubidium (Rb) in noble-gas notation..Rb: [Kr]s

Al:

Zn:

Dy:

Potassium (K): 1s22s22p63s23p64s1

Noble-gas notation:

valence electrons

valence electrons

valence electrons

As:

Tc:

Am: