passwella.
Menu

Unilorin Post-UTME Chemistry 2021 (Model questions) Question 9

Question 9

Chemical Bonding

Diamond is a hard substance because its carbon atoms are held by

  1. A.delocalised electrons
  2. B.strong electro static forces
  3. C.Van der Waals forces
  4. D.strong directional covalent bonds.
Show the answer and explanation

Answer: D (strong directional covalent bonds.)

Explanation

Each carbon in diamond is joined to four others by strong covalent bonds in a rigid 3-D network.