Which of the following statements are not correct? A. The electron gain enthalpy of F is more negati — JEE Mains Chemistry Past Papers Chemistry Question
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) B and D Only (B) A, B, C and D (C) A, B and D Only (D) A, C and D Only
💡 Solution & Explanation
Option (A) Element Heg (KJ/mole) F –328 Cl –349 So option (A) is incorrect. Option (B) ionisation enthalpy always not decreases in a group in periodic table. (exception in Boron family & d-block groups). So option (B) is incorrect. Option (C) The electronegativity of an element depends upon the atoms bounded to it. (Reference NCERT Class XI Topic periodic table Page no. 88) option (C) is correct. That portion put in Red colour box. | JEE(Main) 2023 | DATE : 13-04-2023 (SHIFT-1) | PAPER-1 | OFFICIAL | CHEMISTRY PAGE # 6 Option (D) Al2O3 is Amphoteric but NO is neutral oxide so option 'D' is incorrect. | JEE(Main) 2023 | DATE : 13-04-2023 (SHIFT-1) | PAPER-1 | OFFICIAL | CHEMISTRY PAGE # 7