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p-Block Elements (Group 13 & 14)

JEE Main 2024 (Online) 31st January Evening ShiftMCQEasy📈 Topic in 32% papers+4−1
Ques. 1JEE Main 2024, 31 January (Evening Shift)

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is false but statement II is true
  2. Both statement I and statement II are true
  3. Both statement I and statement II are false
  4. Statement I is true but statement II is false

Answer

(2) Both statement I and statement II are true

Solution

Statement I: trihalides MX3 of group 13 are largely covalent ⇒ easily hydrolysed by water, e.g. BCl3 + 3H2O B(OH)3 + 3HCl ⇒ true

Statement II: Al can use its vacant 3d orbitals (CN = 6):

AlCl3 + 6H2O [Al(H2O)6]3+ + 3Cl- (sp3d2, octahedral) ⇒ true

Answer: (2)

Keep practising — p-Block Elements (Group 13 & 14)

Ques. 2JEE Main 2024, 30 January (Morning Shift)

Aluminium chloride in acidified aqueous solution forms an ion having geometry

  1. Square planar
  2. Octahedral
  3. Trigonal bipyramidal
  4. Tetrahedral
Ques. 3JEE Main 2024, 29 January (Morning Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate from the options given below :

  1. Statement I is false but Statement II is true
  2. Both Statement I and Statement II are true
  3. Both Statement I and Statement II are false
  4. Statement I is true but Statement II is false
Ques. 4JEE Main 2024, 27 January (Morning Shift)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  2. Both (A) and (R) are correct and (R) is the correct explanation of (A)
  3. (A) is true but (R) is false
  4. (A) is false but (R) is true

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