Question

How do I find the effective nuclear charge of Krypton for a 2s electron?

Answer 1

Answer:

the answer is...

Explanation:

Krypton has a larger nuclear charge (Z=36) than argon (Z=18). The shielding of the n=3 shells by the 1s and 2s electrons in the two atoms is approximately equal, so the n=3 electrons in Kr experience a greater effective nuclear charge and are thus situated closer to the nucleus.