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.

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.

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Have a great day (:

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.