Question

A scientist calculated the energy required to break bonds in two unknown compounds, A and B. One compound has a covalent bond, and the other has an ionic bond. The table shows a record of these values. Bond Energy Compound A Compound B 769 kJ/mol 432 kJ/mol Based on the table, which of the following statements is true? Compound A is covalent because transfer of electrons makes relatively stronger bonds. Compound B is covalent because sharing of electrons makes relatively weaker bonds. Compound A is ionic because sharing of electrons makes relatively stronger bonds. Compound B is ionic because transfer of electrons makes relatively weaker bonds.

Answer 1

Answer: Compound B is covalent because sharing of electrons makes relatively weaker bonds.

Explanation:

Ionic bonds: Type of chemical bonds in which transfer of electrons from less electro-negative atom to highly electro-negative atom occurs and with higher value of bond energy.

Covalent bonds: Type of a chemical bond in which sharing of an electrons between the two atoms occurs. Here electro-negativity difference between the atom is very less or zero. Lower value of the bond energy than that of the ionic bonds.

Bond energy of compound A is 769 kJ/mol higher than the bond energy of the compound B that is 432 kJ/mol which means that compound A is ionic  and compound B is covalent.

So, compound B is covalent because sharing of electrons makes relatively weaker bonds.

Answer 2

Answer:

compound b is covalent because of sharing of electrons makes relatively weaker bonds.