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Ionisation Energy

Al has lower ...

Question

$A l$ has lower ionization potential than that of $M g$ because :

A l

atom is bigger than

M g

atom

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M g

atom is bigger than

A l

atom

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all electrons in

M g

are paired, but those of

A l

are not

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all belongs to a higher group

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Solution

The correct option is C all electrons in $M g$ are paired, but those of $A l$ are not
Ionization potential decreases on going from left to right but ionization potential of $A l < M g$ . Aluminium, after losing one electron, attains a stable full filled configuration and magnesium has a stable full filled configuration. Therefore, it is easier to remove an electron from aluminium and difficult to remove from magnesium. Thus, ionization potential of $M g > A l$ .

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Similar questions

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

M g^{2 +}

A l^{3 +}

A l^{3 +}

M g^{2 +}

A l^{3 +}

M g^{2 +}

A l^{3 +}

M g^{2 +}

{Mg}^{2 +}

{Al}^{3 +}

{Al}^{3 +}

{Mg}^{2 +}

{Al}^{3 +}

{Mg}^{2 +}

A l^{+ 3}

M g^{+ 2}

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