Q4 of 29 Page 73

Explain by drawing a figure of the electronic configuration.

Formation of sodium chloride from sodium and chlorine.

A.The atomic number of sodium(Na) = 11


The electronic configuration of 11Na = 2,8,1


The atomic number of chlorine(Cl) = 17


The electronic configuration of 17Cl = 2,8,7


Na transfer its one electron to Cl, so that it can achieve noble


gas configuration (2,8) whereas Cl accepts one electron from Na so that it can achieve noble gas configuration (2,8,8) as shown below:



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