Question

Sodium chloride, better known as table salt, is an ionic compound. Which conclusion would best be drawn from this information? A) Sodium chloride has a high melting point. B) Sodium chloride will not dissolve in water. C) Sodium chloride is a liquid at room temperature. D) Sodium chloride is very flexible at room temperature.

Answer 1

Sodium chloride has high melting point.

Answer: A

Step-by-step explanation:

As sodium chloride exhibited ionic bonding, which is characterized to have hardness and rigidity, ability to get dissolved in water. So the options of not dissolving in water and also liquid at room temperature and flexible at room temperature cannot be property of sodium chloride as we know that salt get easily dissolved in water.

As the bonding in ionic compounds is very strong due to the attractive force acting between oppositely charged elements, the ionic compounds generally exhibit large melting and boiling points. So it can be drawn that as sodium chloride is ionic compound, it will have high melting point.

Answer 2

Answer: option A) Sodium chloride has a high melting point.

Justification:

The positive and negative ions of the ionic compounds form large (huge) lattices bonded by strong electrostactic force. The strong bonds confere these lattices or crystals high melting and boiling points. Also, they are electrolytes which means that they dissolve easily in water forming solutions that conduct electricity. So, the only right choice is the option A).