How can metals be differentiated from non-metals on the basis of any three chemical properties?

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MetalsNon-Metals
$1$. Burn in air to form metal oxides which are basic in nature.$1$. Burn in air to form non-metal oxides which are acidic in nature.
$2$. React with acids to form salt and hydrogen gas.$2$. They are electron acceptors,so they cannot produce hydrogen gas from acids.
$3$. Metals form ionic compounds with non-metals. $e.g., NaCl$.$3$. Non-metals form covalent compounds with other non-metals. $e.g., CCl_4$.

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