Chemistry - PERIODIC TABLE Question with Solution | TestHub
Given below are two statements :
Statement-I L: The first ionization enthalpy of Cr is lower than that of Mn.
Statement-II : The second 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:
Answer:
Solution:
Statement I is true: Manganese () has a higher nuclear charge and a stable configuration compared to Chromium (, ), so the first ionization enthalpy () of Mn is higher than Cr.
Statement II is true: For the second ionization, Cr has a very stable, half-filled configuration, while Mn has a configuration. Removing an electron from the stable subshell of Cr requires significantly more energy than removing the electron from Mn.
Consequently, the second ionization enthalpy () of Cr is higher than that of Mn.
Correct Option: (C) Both Statement-I and Statement-II are true.