Answer:
[He]: 2s² 2pāµ.
[Ne]: 3s².
[Ar]: 4s² 3d¹Ⱐ4p².
[Kr]: 5s² 4d¹Ⱐ5pāµ.
[Xe]: 6s² 4f¹ⓠ5d¹Ⱐ6p².
Explanation:
- Noble elements are used as blocks in writing the electronic configuration of other elements as they are stable elements.
He contains 2 electrons fill 1s (1s²).
So, [He] can be written before the electronic configuration of 2s² 2pāµ.
Ne contains 10 electrons fill (1s² 2s² 2pā¶).
So, [Ne] can be written before the electronic configuration of 3s².
Ar contains 18 electrons is configured as ([Ne] 3s² 3pā¶).
So, [Ar] can be written before the electronic configuration of 4s² 3d¹Ⱐ4p².
Kr contains 36 electrons is configured as ([Ar] 4s² 3d¹Ⱐ4pā¶).
So, [Kr] can be written before the electronic configuration of 5s² 4d¹Ⱐ5pāµ.
Xe contains 54 electrons is configured as ([Kr] 5s² 4d¹Ⱐ5pā¶).
So, [Xe] can be written before the electronic configuration of 6s² 4f¹ⓠ5d¹Ⱐ6p².