Consider the following situations: (1) a magnesium atom and two chlorine atoms join together to form a molecule of magnesium chloride; (2) water molecules interact with each other in a beaker; and (3) two carbon atoms and six hydrogen atoms join together to form ethane. Rank the strength of the bonding interactions taking place in each situation, from the weakest bonds to the strongest bonds.

Question

Quizplus · Accepted Answer

The bonding interactions in situation (2) involve weak intermolecular forces (hydrogen bonding), which are weaker than the chemical bonds in situations (1) and (3). 
Between situations (1) and (3), the chemical bonds in situation (1) (ionic bonding between Mg and Cl) are stronger than the covalent bonds in situation (3) (sharing of electrons between carbon and hydrogen atoms). Therefore, the correct ranking from weakest to strongest bonds is 2 < 1 < 3, leading to choice D as the correct answer.

Consider the Following Situations: (1) a Magnesium Atom and Two