Question

Why is the first ionization enerrgy of Mg greater than both Na and Al separetlyl

Answer 1

HERE COMES THE ANSWER:-

IONIZATION ENERGY:-

ENERGY REQUIRED TO REMOVE OUTER MOST ELECTRONS ❗

SO IN THIS PERTICULAR CASE THE Na IS GONNA BE 1ST ELEMENT SO THERE BY ATTRACTED BY WEAK FORCES OF PROTON AND THE AL FROM 3RD GROUP .

SO THE ATTRACTIVE FORCES IN Mg be greater ❗

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Answer 2

On loosing one electron from Na, it will obtain its noble configuration thus the First IE of Na is less than that of Mg

The valence electron of aluminum is in 3p subshell which is farther than 3s electron from the nucleus. Therefore, it is easy to remove this electron.Due to this the first ionization energy of Al is less than Mg

Thus the first ionization energy of Mg greater than both Na and Al separately.

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