Multiple Covalent Bonds: The Power of Double and Triple Bonds

The video tutorial explains the concept of multiple bonds, including double and triple bonds. It describes how oxygen forms a double bond by sharing two electron pairs, and how nitrogen forms a triple bond by sharing three electron pairs. The concept of an incomplete octet is introduced, where the central atom has fewer than eight electrons. Examples include beryllium and boron, which do not satisfy the octet rule due to their limited valence electrons.

What is the main difference between a double bond and a triple bond?

• A double bond shares one pair of electrons, while a triple bond shares two pairs.

• A double bond shares two pairs of electrons, while a triple bond shares three pairs.

• A double bond shares three pairs of electrons, while a triple bond shares four pairs.

• A double bond shares four pairs of electrons, while a triple bond shares five pairs.

In the formation of an oxygen molecule, how many electrons does each oxygen atom contribute to the bond?

• Four electrons

• Three electrons

• One electron

• Two electrons

Which of the following elements is known to form compounds with an incomplete octet?

• Fluorine

• Carbon

• Oxygen

• Beryllium

How many electrons surround the central boron atom in boron trifluoride (BF3)?

• Ten electrons

• Eight electrons

• Six electrons

• Four electrons

What is the electron configuration of beryllium in beryllium chloride (BeCl2)?

• Six electrons

• Four electrons

• Two electrons

• Eight electrons