Question

Which compound contains both ionic and covalent bonds? 1) potassium chloride 2) potassium hydride 3) potassium nitrate 4) potassium oxide

Answer 1

Answer:

Potassium nitrate

Explanation:

Because NO3 (nitrate) consists of 4 covalently bonds atom. NO3, incorporate of nitrate which share electrons then Ionic bonding occurred between K(as cation) NO3(as anion).

Answer 2

Answer: 3) potassium nitrate

Explanation:

An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and forms a positively charged ion called as cation. The element which accepts the electrons is known as electronegative element and forms a negatively charged ion called as anion.

A covalent bond is formed when an element shares its valence electron with another element. This bond is formed between two non metals.

1.  potassium chloride :$KCl$ is made up of ionic bond between metal and non metal.

2.  potassium hydride :$KH$ is made up of ionic bond between metal and non metal.

3) potassium nitrate : $KNO_3$ made up of ionic bond and $NO_3$ is made up of covalent bond between two non metals nitrogen and oxygen.

4) potassium oxide: $K_2O$ is made up of ionic bond between metal and non metal.

Thus potassium nitrate contains both ionic and covalent bonds.