Principal quantum number question.For a shell which has a principal quantum number equal to 3:what is the shell number,what is the shell letter what is the number of subshells what is the total number of orbitals in this shell.The maximum number of electrons in this shell is
问题描述：
Principal quantum number question.For a shell which has a principal quantum number equal to 3:
what is the shell number,
what is the shell letter
what is the number of subshells
what is the total number of orbitals in this shell.
The maximum number of electrons in this shell is
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