Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main202227 Jul 2022Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

Given below are two statements: Statement I : The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases. Statement II: Hydroxides of Be and Al dissolve in excess alkali to give beryllate and aluminate ions. In the light of the above statements. Choose the correct answer from the options given below.

Options

  1. ABoth statement I and Statement II are true
  2. BBoth statement I and Statement II are false
  3. CStatement I is true but Statement II is false
  4. DStatement I is false but Statement II is true

Correct answer

D. Statement I is false but Statement II is true

Step-by-step solution

The chlorides of both beryllium and aluminium have Cl– bridged chloride structure in vapour phase. Both the chlorides are soluble in organic solvents and are strong Lewis acids. They are used as Friedel Craft catalysts. Be 2 Cl 4 is lewis acid and Al 2 Cl 6 has complete octet. Be and Al are amphoteric metals therefore dissolve in acid as well as alkaline solution and form beryllate and aluminate ions in excess alkali. Beryllium hydroxide dissolves in excess of alkali to give a beryllate ion, [ Be ( OH ) 4 &#1

Practice p Block Elements (Group 13 & 14) on Quantrex Academy →

More from p Block Elements (Group 13 & 14)

Given below are two statements : Statement I: Aluminium upon reaction with NaOH forms [Al(OH)₆]³⁻ ion. Statement II: The geometry of ICl₄^- , ClO₃^- and IBr₂^- is square planar, py 2026Consider the following reactions Na ₂ ~B ₄ O ₇ 2 X + Y CuSO ₄+ Y Non-Luminous flame Z + SO ₃ 2 Z +2 X + Carbon Luminous flame 2 Q + Na ₂ ~B ₄ O ₇+ CO The oxidation states of Cu in 2026It is noticed that Pb ²⁺ is more stable than Pb ⁴⁺ but Sn ²⁺ is less stable than Sn ⁴⁺ . Observe the following reactions. PbO ₂+ Pb 2 PbO ; _ r G ^ (1) SnO ₂+ Sn 2 SnO ; _ r G ^ (2 2026The 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 decreas 2026Given below are two statements : Statement I : Elements ' X ' and ' Y ' are the most and least electronegative elements, respectively among N , As , Sb and P. The nature of the oxi 2026Consider the following reactions. PbCl ₂+ K ₂ CrO ₄ ~A +2 KCl (Hot solution) A + NaOH B + Na ₂ CrO ₄ PbSO ₄+4 CH ₃ COONH ₄ ( NH ₄ )₂ SO ₄+ X In the above reactions, A , B and X are 2026Given below are two statements : Statement I : The number of pairs among [ SiO ₂, CO ₂ ], [ SnO , SnO ₂ ], [ PbO , PbO ₂ ] and [ GeO , GeO ₂ ] , which contain oxides that are both 2026The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 ~kJ ~mol ⁻¹ respectively. The above values are lowest among their group members. The nature o 2025 Full p Block Elements (Group 13 & 14) list All JEE Main PYQs