JEE Mains · Chemistry · STD 11 -p-Block elements - I
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 otpions given below:
- A A and C only
- B A and D only
- C C and D only
- D B and D only
Answer & Solution
Correct Answer
(C) C and D only
Step-by-step Solution
Detailed explanation
(A) \(B ^{+3} Tl > In > Ga > Al : EN\) (C) \(B > Tl > Ga > Al > In :\) IE (D) Trichlorides and triiodides of group \(13^{\text {th }}\) elements are covalent in nature
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