Question

Укажите верные утверждения об аллотропных видоизминениях углерода: А. Алмаз бесцветное кристаллическое вещество с атомной решёткой, тугоплавкое.В. Графит- бесцветное кристаллическое вещество.С. Карбин- мелкокристаллический порошок черного цвета.D. Фуллерин- кристалисеская решетка напоминает квадрат.​

Answer 1

Ответ:

Правда

Правда

Ложь

Правда

Объяснение:

Answer 2

Allotropes of Carbon

Carbon is an element that can exist in different forms known as allotropes. Each allotrope has its own unique physical and chemical properties. Let's examine the statements provided and determine which ones are correct based on the search results.

A. Diamond is a colorless crystalline substance with a tightly-packed atomic lattice. It is known for its hardness and high melting point. This statement is correct [[1]].

B. Graphite is a crystalline substance that is typically black or gray in color. It consists of layers of carbon atoms arranged in a hexagonal lattice. Graphite is known for its lubricating properties and electrical conductivity. The statement that graphite is a colorless crystalline substance is incorrect [[2]].

C. Carbin is not a well-known allotrope of carbon. It is possible that this term is being confused with "carbene," which is a highly reactive molecule containing a carbon atom with two unshared electrons. The statement about carbin is incorrect.

D. Fullerene is a molecule composed entirely of carbon atoms arranged in a unique structure resembling a soccer ball. It consists of carbon atoms arranged in pentagons and hexagons. Fullerene molecules can form a variety of shapes and sizes, including spherical, cylindrical, and tubular structures. The statement that the crystalline lattice of fullerene resembles a square is incorrect [[3]].

Based on the search results, the correct statements about the allotropes of carbon are:

- A. Almaz (diamond) is a colorless crystalline substance with a tightly-packed atomic lattice, and it is tought to melt. - D. Fullerene is a molecule composed entirely of carbon atoms arranged in a unique structure resembling a soccer ball.

Please let me know if you have any further questions!