Question

Identify the incorrect statement:

• A. Second ionization enthalpy...
• B. Zr and Hf share...
• C. Melting point of Mn...
• D. Interstitial compounds...
• A. V $>$ Cr $>$ Mn
• B. V $<$ Cr $<$ Mn
• C. V $<$ Cr $>$ Mn
• D. V $>$ Cr $<$ Mn
• A. FeCl$_2$, CuCl$_2$
• B. VOCl$_2$, FeCl$_2$
• C. VOCl$_2$, CuCl$_2$
• D. VOCl$_2$, MnCl$_2$
• A. Cr
• B. Fe
• C. Mn
• D. V
• A. 4f orbitals are more diffused
• B. Energy difference...
• C. Energy difference...
• D. Actinoids are more...

Answer 1

The Correct Option is A

The incorrect statement is (1). The second ionization enthalpy of Pd is higher than Ag due to the stability of Pd’s d10 configuration.

Answer 2

Cr has a stable half-filled d5 configuration, making it harder to ionize than V and Mn, so the order of second ionization enthalpy is V $<$ Cr $>$ Mn.

Answer 3

FeCl$_2$ and VOCl$_2$ both exhibit a green color in aqueous solution due to similar d-electron configurations.

Answer 4

Mn has the highest oxidation state (+7) in the first row of transition elements, as seen in compounds like KMnO$_4$.

Answer 5

Actinoids exhibit a higher number of oxidation states because the energy difference between 5f and 6d is less compared to the difference between 4f and 5d orbitals in lanthanoids