Question

1. The electronic configuration is the arrangement of electrons in
1) nucleus
2) sub-shells
3) shells

4) all the above​

Answer 1

Answer:

subshell

Explanation:

Each subshell can hold a different number of electrons. The n number determines how many of the subshells make up the shell. All electrons in an atom are placed into shells according to electron energies. These shells are labeled with the integers, starting from one up to infinity, with one being the lowest energy. Each subshell has a maximum number of electrons that it can hold.