Question

The crystals of graphite are made up of _______ while that of sodium chloride is made up of ______.
A. Atoms, ions
B. Ions, atoms
C. Molecules, atoms
D. Molecules, ions

Answer 1

Hint:Carbon exists in a second, more familiar, crystalline form called graphite, whose crystals structure is also shown in graphite. Graphite is a polymorph of element carbon found in carbon rich metamorphosed rocks and veins. Graphite crystals are rare and very brittle. Graphite specimens will leave smudges when handled and stored. Sodium chloride is formed by the ions. It is formed by the electrons.

Complete step by step answer:
Graphite is made entirely out of carbon, as is the more recently discovered molecule containing carbon 60 atoms. The way the carbon atoms are arranged in space, however, is different for three materials, making them allotropes of carbon.
The carbon atom is arranged in an infinite array, but they are layered. These atoms have two types of interactions with one another. In the first, each carbon atom is bonded to three other carbon atoms and arranged at the corners of a network of regular.
An ionic compound such as sodium chloride is held together by an ionic bond. This type of bond is formed when oppositely charged ions attract.
Hence, the crystals of graphite are made up of atoms while that of sodium chloride is made up of ions.

Therefore, option (A) is the correct answer.

Note: Here we remember that graphite is the formation by the carbon atom. Sodium chloride is formed by the sodium and chlorine ion. It is formed by the ionic bond. The transformation of electrons between sodium and chlorine forms sodium chloride which is salt. This attraction is similar to that of two opposite poles of a magnet.