Multiple choice

Diamond is an allotropic form of

  1. sodium

  2. carbon

  3. sulphur

  4. none of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diamond is a crystalline allotrope of carbon, where carbon atoms are arranged in a tetrahedral structure. This gives diamond its exceptional hardness and optical properties. Graphite is another common allotrope of carbon.