p-Block Element...

The Ge (II) is a powerful reducing agent while Pb (IV) is a powerful oxidising agent. This is because

Which of the following oxides of Group 14 are amphoteric in nature?

A. CO₂
B. SiO₂
C. SnO₂
D. PbO₂

Which of the following pairs of compounds are incorrectly matched with their chemical formulae?

(A) Butter of tin - SnCl₄.5H₂O (Stannic chloride)
(B) Sugar of lead - 2PbCO₃.Pb(OH)₂ (Basic lead carbonate)
(C) Carborundum - SiC (Silicon carbide)
(D) Water glass - Na₂SiO₃ (Sodium silicate)
(E) White lead - Pb(CH₃COO)₂ (Lead acetate)

White metallic tin buttons get converted to grey powder. This transformation is related to

Consider the following statements:

(A) Graphite is a good conductor of electricity due to the availability of delocalised electrons.
(B) Carbon can form C=S bond because C has the ability to form dπ-dπ bond.
(C) Both diamond and boron nitride have similar structures.
(D) Silicon carbide has three-dimensional structures with each silicon and carbon being tetrahedrally surrounded by four atoms of the same kinds.

Which of the given statements are incorrect?

Which of the following statements is incorrect?

To prepare a silicon polymer containing 10 Si-O-Si linkages, the number of R₂Si(OH)₂ units required is