Question

what is the subshell in which the last electron of the first element in the 6th period integers?​

Answer 1

The subshell is 's' subshell

Explanation:

8

The first element in the sixth period is Caesium (Cs). Its atomic no. is 55.

vo 86

* 4.0

4.0

Nd the electronic configuration according to the Aufbau Principle is as given below:

1522522 p, 352, 3p°, 4s?, 3dº, 4p°, 5s?, 4d", 5p, 6s'.

And the last electron is in the s subshell.

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Answer 2

the subshell is S subshell.