Prof. Marlin Zboncak
Jan 11, 2025
is KNO3 a Covalent or Ionic bond?
Is potassium nitrate (KNO3) classified as having a covalent bond or an ionic bond? Could you explain the reasoning behind its classification and provide some examples of similar compounds?
3 Answers
Potassium nitrate, KNO3, is often called an “ionic compound”. KNO3 is a network solid consisting of alternating potassium atoms and nitrate radicals. The bonds between K and O are highly polar making them high in ionic character, yet the bonds between N and O have high covalent character.
You’d rarely see covalent bonds in a compound that contains alkali metals. Since K is an alkali metal (group (column) #1), it’s ionic bonding. You can figure it out too since K has +1 charge and NO_3 has a -1 charge (they’re both IONS).
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