Question

calculate effective nuclear charge of chlorine and potassium.
plz answer this. ​

Answer 1

“Effective nuclear charge” is a concept that helps to understand how strongly the outer-shell electrons are held by the atom.

The value is obtained adding the charges on the nucleus and all the non-outer-shell electrons.

So a chlorine atom, atomic number 17:

The nucleus has a charge of +17

The electron configuration is 1s2 2s2 2p6 3s2 3p5.

The outer shell is #3. If you count all the other electrons (in shell 4s #1 and #2), you find 10. Ten electrons have a combined charge of -10.

So the effective nuclear charge = +17 + (-10) = +7.

Answer 2

Answer:

kya bkchodi hai

Na(Z=11) = 1s2(K- shell) 2s2,2p6(L-shell) 3s1(M-shell) Sigma for 3s1 electron(M-shell electron) = (0.35 x 0) + (0.85 x 8) + (1.0 x 2) = 8.8. Zeff experienced by 3s1 electron = 11 - 8.8= 2.2.

Explanation:

...MARK ME AS BRAINLIEST...