Periodic TableHard

Question

Given below are two statements :

Statement-I L: The first ionization enthalpy of Cr is lower than that of Mn.

Statement-II : The second and third ionization enthalpies of Cr are higher than those of Mn .

In the light of the above statements, choose the correct answer from the options given below :

Options

A.Both Statement-I and Statement-II are false.
B.Statement-I is true but Statement-II is false.
C.Both Statement-I and Statement-II are true.
D.Statement-I is false but Statement-II is true.

Solution

$Cr = (Ar)3{\text{ }d}^{5}4{\text{ }s}^{1}$

$${Mn = (Ar)3{\text{ }d}^{5}4{\text{ }s}^{2} }{{IE}_{1}(Cr) < {IE}_{1}(Mn) }{{IE}_{2}(Cr) > {IE}_{2}(Mn) }{{IE}_{3}(Cr) < {IE}_{3}(Mn)}$$

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