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26. What is effective nuclear charge? |
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Answer» Theeffective nuclear charge(often symbolized asis the netpositive chargeexperienced by anelectronin a polyelectronicatom. The term "effective" is used because theshielding effectofnegatively chargedelectrons prevents higherorbital electronsfrom experiencing the fullnuclear chargeof thenucleusdue to the repelling effect ofinner-layer electrons. The effective nuclear charge experienced by theelectronis also called thecore charge. It is possible to determine the strength of the nuclear charge by theoxidation numberof the atom. The effective nuclear charge is the net positive charge experienced by an electron in a polyelectronic atom. |
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