Which of the following statements are not correct? A. The electron gain enthalpy of F is more negative than that of Cl.…
Classification of Elements & Periodicity · Class 11 · JEE Main Previous Year 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. AlO and NO are examples of amphoteric oxides.
- a
A, B, C and D
- b
A, B and D only
- c
B and D only
- d✓
A and D only
A and D only
🧠 Three of these four statements contain classic errors about periodic trends The question asks which are NOT correct. Check each carefully.
🗺️ Statement check A: "EGE of F is more negative than Cl" — Wrong. Cl has more negative EGE ( vs kJ/mol) because F's 2p orbital is too small and repels the incoming electron. NOT correct. B: "IE decreases down a group" — This is correct as stated. Correct. C: "Electronegativity depends on the atoms bonded to it" — EN is not a fixed property of the element, and it depends on the bond partner of the atom. Correct. D: " and NO are amphoteric oxides" — is amphoteric but NO is a neutral oxide. NOT correct.
Statements A and D are NOT correct.
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