They are electrons in d and f subshells that are outside of the noble gas core
Oxygen as 2 core electrons and 6 valence electrons.
Germanium has 28 core electrons.
They are called the pseudocore electrons.
54
They are electrons in d and f subshells that are outside of the noble gas core
Oxygen as 2 core electrons and 6 valence electrons.
Oxygen has 6 core electrons.
Germanium has 28 core electrons.
Tin has 46 core electrons.
They are called the pseudocore electrons.
Oxygen as 2 core electrons and 6 valence electrons.
Nitrogen atoms have two core electrons.
Oxygen has 6 core electrons.
Silicon has a total of 10 core electrons and 4 valence electrons.
2,8,18,7... 28 core electrons 7 valence electrons.
54