Effective Nuclear Charge Video Lessons

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Problem: What is the effective nuclear charge (Zeff) felt by a valence electron in a Cl atom?A) 5B) 6C) 7D) 8E) 9

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We’re being asked to calculate the effective nuclear charge (Zeff) of the valence electron in a chlorine  atom


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


Zeff = Z -S


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 Zeff.


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Problem Details

What is the effective nuclear charge (Zeff) felt by a valence electron in a Cl atom?

A) 5

B) 6

C) 7

D) 8

E) 9

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