Write the electrons configuration of the following: He, Li, C, O, Ne.
He: 1s²
Li: 1s² 2s¹
C: 1s² 2s² 2p²
O: 1s² 2s² 2p⁴
Ne: 1s² 2s² 2p⁶
The electron configurations of the elements you mentioned are as follows:
1. Helium (He): 1s²
2. Lithium (Li): 1s² 2s¹
3. Carbon (C): 1s² 2s² 2p²
4. Oxygen (O): 1s² 2s² 2p⁴
5. Neon (Ne): 1s² 2s² 2p⁶
To determine the electron configuration of an atom, you need to follow the following steps:
1. Determine the atomic number of the element. This can be found on the periodic table.
2. Identify the total number of electrons in the atom. This is equivalent to the atomic number.
3. Fill the electrons into energy levels and sublevels based on the Aufbau Principle, filling the lowest energy levels first.
Now, let's determine the electron configuration for the given elements:
1. Helium (He):
- Atomic number: 2
- Electron configuration: 1s²
2. Lithium (Li):
- Atomic number: 3
- Electron configuration: 1s² 2s¹
3. Carbon (C):
- Atomic number: 6
- Electron configuration: 1s² 2s² 2p²
4. Oxygen (O):
- Atomic number: 8
- Electron configuration: 1s² 2s² 2p⁴
5. Neon (Ne):
- Atomic number: 10
- Electron configuration: 1s² 2s² 2p⁶
Remember that the superscript represents the number of electrons in each sublevel.