We’re being asked to **calculate the effective nuclear charge (Z _{eff})** of the

Recall that the ** effective nuclear charge** is the force exerted by the nucleus onto an electron and is given by:

where **Z** = nuclear charge or atomic number and **S** = shielding constant.

For this problem, we need to do the following steps:

*Step 1:* Determine the atomic number.

*Step 2:* Determine the electron configuration and group them by n-values.

*Step 3:* Calculate for the shielding constant using Slater's Rules.

*Step 4:* Calculate for Z_{eff}.

Calculate Z_{eff }for the 4s electron in a copper atom, Cu. Express your answer numerically.

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Based on our data, we think this problem is relevant for Professor Goodey's class at TAMU.