Sure! Here are the electron configurations for each of the elements you mentioned, written in terms of their subshells:
-
Neon (Ne):
- Atomic number = 10
- Electron configuration: 1s² 2s² 2p⁶
-
Iron (Fe):
- Atomic number = 26
- Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
-
Calcium ion (Ca²⁺):
- Atomic number of calcium = 20. When it loses 2 electrons, it typically loses them from the 4s subshell.
- Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁰ 4s⁰ (or simply, [Ar], where [Ar] represents the noble gas configuration of argon)
-
Gallium (Ga):
- Atomic number = 31
- Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹
-
Krypton (Kr):
- Atomic number = 36
- Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶
Let me know if you need any more information!