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Explain giving reason why the imitation enthalpy of sodium is less as compared to chlorine |
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Answer» ELECTRONIC CONFIGURATIONS are as follows: Na - [NE] 3s1 Mg - [Ne] 3s2 Sodium has one VALENCE electron in 3s1 and by losing this electron it attains stable configuration. THEREFORE the 1st ionization energy of Na is less than Mg. After removing an electron the Na attains noble gas configuration whereas Mg has one electron left. To remove an electron from a noble gas configuration high energy is required. Therefore the second ionization enthalpy is higher than that of magnesium. |
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