In this problem, you will answer some basic questions about the electron configu

Question

In this problem, you will answer some basic questions about the electron configuration notation used to show the number of electrons in each subshell of an atom of a particular element.

Part A

What is wrong with the notation 1s22s22p63s23p63d104s24p2 for germanium (atomic number 32)?

What is wrong with the notation  for germanium (atomic number 32)?

Part C

Write the electron configuration for the Na+ ion, which has ten electrons.

Enter 3s^3 for 3s3 , etc. Separate the subshells by spaces.

Part D

Write the electron configuration for the Br? ion, which has thirty-six electrons.

Enter 3s^3 for 3s3 (e.g., 1s^2 2s^2).

The 4s subshell should appear before the 3d subshell. The 3p subshell should have more than 6 electrons. The 3d subshell can hold only 8 electrons. The 4d subshell should receive electrons before the 4p subshell.

Explanation / Answer

PART A:

answer is A

The 4s subshell should appear before the 3d subshell.

If you sort the orbitals in the order how they are filled, that means in order of rising energy. d-orbitals have a higher energy than the next s orbital, energy of f-orbitals exceeds the energy next but one s orbitals and the other orbitals in between but not the next d-orbital. So the correct order in an electron configuration would be:
1s , 2s , 2p , 3s , 3p , 4s , 3d , 4p , 5s , 4d , 5p , 6s , 4f , 5d , 6p ,..
e.g. germanium
1s

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