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.

INCREASING THE PRESSURE

Explanation:

Gas solubility is liquid or water is increases by increasing the pressure of the gas. This is so because pressure shows the escape tendency of a gas into a solvent phase. Therefore increasing the pressure causes the gas to escape more into the solvent phase and solubility is ensured. This is illustrated by Henry's law which is written mathematically as:

P = kH C

where P is the pressure, kH is the Henry's constant and C is the concentration of gas in a liquid.