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  • The incorrect statement is  Option: 1 The first ionization enthalpy of is l

The incorrect statement is
 

Option: 1

The first ionization enthalpy of \mathrm{K} is less than that of \mathrm{Na}$ and $\mathrm{Li}.


Option: 2

\mathrm{Xe} does not have the lowest first ionization enthalpy in its group.
 


Option: 3

The first ionization enthalpy of element with atomic number 37 is lower than that of the element with atomic number 38 .

 


Option: 4

The first ionization enthalpy of \mathrm{Ga} is higher than that of the d-block element with atomic number 30 .


Answers (1)

best_answer

(1) is correct statement.

(2) is correct statement.

(3) \mathrm{Rb} (atomic number 37) \mathrm{IE_{1}} is lower than \mathrm{Sr} (atomic number 38) \mathrm{IE_{1}}. this also correct.

(4) \mathrm{IE_{1}} of \mathrm{Ga\left ( 4s^{2}4p^{1} \right )} is higher than \mathrm{IE_{1}} of \mathrm{Zn} atomic number \mathrm{30\left ( 3d^{10} \, 4s^{2} \right )}, this statement is incorrect.

Due to \mathrm{Zn} has fully paired orbitals and \mathrm{Ga} has not.

Option (4) is correct.

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