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Which of the following is a measure of the firmness or strength with which an extra electron is bound to the free atom?A. First ionization enthalpyB. Second ionization enthalpyC. Third ionization enthalpyD. Zeroth ionization enthalpy |
Answer» Correct Answer - D Zeroth ionization enthalpy is the energy required to remove an electron from an isolated gaseous anion to form free atom. `X^(-)(g) rarr X(g) +e^(-)` It is numerically equal to first electron gain enthalpy. |
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