Asked by C.

In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge?

a. 1s
b. 2s
c. 2p
d. 3s
e. 3p

I originally thought 3p, since those are the outer electrons, but that was marked wrong. Why is it not 3p? Is the right answer 3s then?
Answered by C.
1s, right?
Answered by DrBob222
The 3p is right for the LEAST effective nuclear charge (remember those outer electrons aren't held strongly) but this is the opposite of that; therefore, the correct answer is 1s. There is no shielding for the 1s electrons. (Technically, the other electron in the 1s does offer some shielding; however, those 1s electrons SEE the highest pull from the protons in the nucleus.
Answered by K
1s
Answered by Tejasree
1s. because it is the nearest orbital to nucleus
Answered by LEHLOHONOLO
1S
Answered by Benjamin
C
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