configuration of sodium.--------------------Find out the preceding nob – InterviewSolution

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1.	configuration of sodium.--------------------Find out the preceding noble gas with the help of the periotable and complete Table 1.7.Subshell electronic configuration[Ar] 3d1 452Elements2,Sc20 Ca3Mg27Co30ZnTable 1.7
Answer» 20Ca-[Ar]4s^2 ,12Mg-[Ne]3s^2 ,27Co-[Ar]3d^7 4s^2 ,30Zn-[Ar]3d^10 4s^2.

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