Calculate effective nuclear charge of chlorine and potassium. plz answ

1.	Calculate effective nuclear charge of chlorine and potassium. plz answer this.
Answer» ive 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 +17The 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.

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