The figure below has several different electron configurations for carbon. Fill
ID: 917184 • Letter: T
Question
The figure below has several different electron configurations for carbon. Fill in the answers to the questions with A, B, C, or D. In questions that have more than one possible answer give the answers in alphabetic order.
Hint: The figure below will display properly when printed.
Which electron configuration is the lowest ground state configuration? ___
Which electron configuration is a violation of Hund's rule? ___ and ___
Which electron configuration is a violation of the Pauli exclusion principle? ___
Which electron configuration is a valid excited state? ___ and ___
Which electron configuration is absolutely forbidden? ___
Explanation / Answer
1) Which electron configuration is the lowest ground state configuration? C
2) Which electron configuration is a violation of Hund's rule? A and C
Hunds's rule : 1) Every orbital in subshell should be singly occupied before the any orbital doubly occupied.
2) All the electrons in the singly occupied orbitals must have same spin.
3) Which electron configuration is a violation of the Pauli exclusion principle? B
Pauli's exclusion principle: No two electrons in the orbital have same spin.
4) Which electron configuration is a valid excited state? A and D
5) Which electron configuration is absolutely forbidden? B
Because 3 electrons in 2s orbital which is not yet all allowable.
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