In the following set of elements, rank them from LOWEST first ionization energy to HIGHEST first ionization energy.   He, Ar, Mg, Al, P, Cl

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In the following set of elements, rank them from LOWEST first ionization energy to HIGHEST first ionization energy.

 

He, Ar, Mg, Al, P, Cl

Expert Solution
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definition : ionization energy is the minimum amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated neutral gaseous atom or molecule.

trend of ionization energy in periodic table :

group : from top to bottom ionization energy decreases going down the group.

period : from left to right ionization energy increases across a period.

given elements :

He, Ar, Mg, Al, P, Cl

elements  first ionization energy
Helium 2370 kJ/mol
Argon 1520 kJ/mol
Magnesium 738 kJ/mol
Aluminium 577 kJ/mol
Phosphorus 1012 kJ/mol
chlorine 1251
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