p-Block Elements (Group 13 & 14)

Na2B4O7 heat X + NaBO2 in the above reaction the product "X" is :

1. NaB3O5
2. H3BO3
3. B2O3
4. Na2B2O5

Identify the correct statements from the following :

1. A and C only
2. B and C only
3. C and D only
4. A, B and C only

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

Which of the following species is not stable?

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

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

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

1. Ga
2. Al
3. B
4. In

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

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.

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]

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