Question

Which of the following statements are not correct?
A. The electron gain enthalpy of F is more negative than that of Cl.
B. Ionization enthalpy decreases in a group of periodic table.
C. The electronegativity of an atom depends upon the atoms bonded to it.
D. Al₂O₃ and NO are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below:

• A. Α, B and D Only
• B. A, B, C and D
• C. B and D Only
• D. A, C and D Only

Answer 1

The Correct Option is D

- The electron gain enthalpy of fluorine (\( \text{F} \)) is more negative than that of chlorine (\( \text{Cl} \)), so statement A is correct.
- Ionization enthalpy does decrease as we move down a group in the periodic table, so statement B is correct.
- Electronegativity of an atom is a property of the atom itself and does not depend on the atoms bonded to it, so statement C is incorrect.
- Al$_2$O$_3$ is amphoteric, but NO is a neutral oxide, not amphoteric, so statement D is also incorrect.
Thus, the incorrect statements are C and D.