Give the actual ground-state electron configuration for copper (cu) using the complete form.
express the electron configuration using superscripts where appropriate. for example, the configuration for li would be entered as 1s^22s^1.

Explanation:

As per Aufbau principle, in the ground state of an atom or ion the electrons fill atomic orbitals of the lowest energy levels first, before filling the higher energy levels.

Therefore, s-orbital energy level is filled before the filling of p-orbital. And, p-orbital is filled before the filling of d-orbital energy level and so on.

For example, the ground-state electron configuration for copper (Cu) is

As 10 electrons present in the d-shell makes it more stable therefore, there is actually only one electron is present in 4s shell.

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the temperature of the gas, in k, not celsius.