Boron and Carbon FamilyHard

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 option given below:

Options

A.A and C only
B.A and D only
C.C and D only
D.

B and D only

Solution

(A) $B^{+ 3} < {Al}^{+ 3} < {Ga}^{+ 3} < {In}^{+ 3} < {Tl}^{+ 3}$ : ionic size

(B) $B > Tl > In > Ga > Al:EN$

(C) $B > Tl > Ga > Al > In:IE$

(D) Trichlorides and triiodides of group $13\ ^{\text{th~}}$ elements are covalent in nature

Create a free account to view solution

View Solution Free
Topic: Boron and Carbon Family·Practice all Boron and Carbon Family questions

More Boron and Carbon Family Questions

In which of the following species is the underlined carbon having sp3 hybridisation?...Which one of the following reaction will not produce hydrocarbon as final product :-...Number of atoms in 558.5 gram Fe (at.wt. of Fe = 55.85 g mol-1) is...The correct statement(s) for orthoboric acid is/are...If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction of octahedral holes occ...