First I.P. of $M g$ is ....... than $A l$

Less

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Equal

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None of these

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Solution

The correct option is B More
Electronic configuration for Mg and Al is as follows:
Mg - $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2}$
Al - $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{1}$
so ionization potential for Mg is greater than Al because in Mg electron is being removed from full filled 3s orbital so it requires higher energy.

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Similar questions

Q. Explain why the first I.E. of Al is lower than that of Mg.

The first ionization potential of Al is smaller than that of Mg because

Q. The first ionisation potential of

A l

is smaller than that of

M g

because :

Q. First ionisation enthalpy of Al is lower than that of Mg. This is because:

The first ionistation enthalpies of Na, Mg, Al, and Si are in the order
(a) Na< Mg > Al < Si (b) Na> Mg > Al > Si
(c) Na< Mg< Al< Si (d) Na> Mg> Al < Si

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First I.P. of Mg is ....... than Al

The correct option is B MoreElectronic configuration for Mg and Al is as follows:Mg - 1s22s22p63s2Al - 1s22s22p63s23p1so ionization potential for Mg is greater than Al because in Mg electron is being removed from full filled 3s orbital so it requires higher energy.

First I.P. of $M g$ is ....... than $A l$