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p-Block Elements (Group 13 & 14) · Question 10

NEET (UG) 2019MCQMedium📈 Topic in 38% papers+4−1
1

Which of the following is incorrect statement?

  1. GeX4 (X = F, Cl, Br, I) is more stable than GeX2
  2. SnF4 is ionic in nature
  3. PbF4 is covalent in nature
  4. SiCl4 is easily hydrolysed

Answer

(3) PbF4 is covalent in nature

Solution

(1) For Ge the +4 oxidation state is more stable than +2 ⇒ GeX4 is more stable than GeX2 ⇒ correct.

(2) and (3) As per NCERT, most of the tetrahalides are covalent in nature, but SnF4 and PbF4 are ionic in nature ⇒ (2) is correct and (3) is incorrect.

(4) SiCl4 is easily hydrolysed because Si can accept a lone pair of water into its vacant d-orbital ⇒ correct.

Answer: (3)

NEET (UG) 2019

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

2

Which of the following species is not stable?

  1. [Sn(OH)6]2-
  2. [SiCl6]2-
  3. [SiF6]2-
  4. [GeCl6]2-
NEET (UG) 2019
3

The correct order of atomic radii in group 13 elements is

  1. B < Al < In < Ga < Tl
  2. B < Al < Ga < In < Tl
  3. B < Ga < Al < Tl < In
  4. B < Ga < Al < In < Tl
NEET 2018
4

Which one of the following elements is unable to form MF63- ion?

  1. Ga
  2. Al
  3. B
  4. In
NEET 2018
5

It is because of inability of ns2 electrons of the valence shell to participate in bonding that

  1. Sn2+ is oxidising while Pb4+ is reducing
  2. Sn2+ and Pb2+ are both oxidising and reducing
  3. Sn4+ is reducing while Pb4+ is oxidising
  4. Sn2+ is reducing while Pb4+ is oxidising
NEET 2017
6

Boric acid is an acid because its molecule

  1. contains replaceable H+ ion
  2. gives up a proton
  3. accepts OH- from water releasing proton
  4. combines with proton from water molecule.
NEET 2016 (Phase 2)
7

AlF3 is soluble in HF only in presence of KF. It is due to the formation of

  1. K3[AlF3H3]
  2. K3[AlF6]
  3. AlH3
  4. K[AlF3H]
NEET 2016 (Phase 2)
8

The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence

  1. Al < Ga < In < Tl
  2. Tl < In < Ga < Al
  3. In < Tl < Ga < Al
  4. Ga < In < Al < Tl
AIPMT 2015
9

Which of the following is electron-deficient ?

  1. (BH3)2
  2. PH3
  3. (CH3)2
  4. (SiH3)2
NEET 2013
10

Which of the following structure is similar to graphite?

  1. B4C
  2. B2H6
  3. BN
  4. B
NEET 2013
11

Which of these is not a monomer for a high molecular mass silicone polymer?

  1. Me3SiCl
  2. PhSiCl3
  3. MeSiCl3
  4. Me2SiCl2
NEET 2013

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