JEE Main 2026 Chemistry question
The correct statements from the following are :
(A) Ionic radii of trivalent cations of group 13 elements decreases down the group.
(B) Electronegativity of group 13 elements decreases down the group.
(C) Among the group 13 elements, Boron has highest first ionisation enthalpy.
(D) The trichloride and triiodide of group 13 elements are covalent in nature.
Choose the correct answer from the options given below :
Answer: (3)
Solution
Ionic radii increases down group 13 (A false). Electronegativity doesn't decrease monotonically due to
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