Question

Which of the following BEST explains why diamonds are very hard?

A. Diamonds are made up of several different isotopes of carbon.
B. Diamonds are made up of several different allotropes of carbon.
C. The atoms in a diamond are arranged in a rigid crystalline structure.
D. The atoms in a diamond are arranged in flat sheets that are tightly bonded.

Answer 1

Hey there!

Diamonds are very hard because the atoms in a diamond are arranged in a rigid crystalline structure. This means your answer is option D.

Hope this helps.
Have a great day (:

Answer 2

d.i think hope i help:):)