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

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

A

Less

B

More

C

Equal

D

None of these

Text Solution

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The correct Answer is:
B
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First ionisation potential of Mg is .... than that of Al.

Assertion (A) : IE_(1) of Mg is greater than that of Al . Reason (R ) : It is easier to remove an electron fro 3s orbital than from 3p orbital.

Which of the following statement is incorrect? The second ionization potential of Mg is greater than the second ionization potential of Na The first ionization potential of Al is less than the first ionization potential of Mg The first ionization potential of Na is less than the first ionization potential of Mg The third ionization potential of Mg is greater than that of Al

Among the statements (I -IV) , the correct ones are : (I) Be has smaller atomic radius compared to Mg. (II) Be has higher ionization enthalpy than Al. (III) Charge/ radius ratio of Be is greater than that of Al. (IV) Both Be and Al form mainly covalent compounds.

The first ionisation energy of Al is smaller than that of Mg because :