# Why is FeCl3 covalent? [duplicate]

There is an electronegativity difference of 1.2 between $\ce{Fe}$ and $\ce{Cl}$. Then why it is covalent?

• Electronegativity alone can't tell you everything. For example, $\ce{MnO}$ is mostly ionic, while $\ce{Mn2O7}$ is markedly covalent. – Ivan Neretin Feb 23 '17 at 13:42
• Even from basic electronegativity difference you can tell it - 1,2 < 1,7 so why it should be unusual according to you? – Mithoron Feb 23 '17 at 21:48