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

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 : is made up of ionic bond between metal and non metal.

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

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

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

Thus potassium nitrate contains both ionic and covalent bonds.

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