Is Diamond a metal or nonmetal?

• Non-metals are the elements which form negative ions by accepting or gaining electrons. 
• Non-metals usually have 4, 5, 6 or 7 electrons in their outermost shell.
• Non-metals are those which lack all the metallic attributes.
• They are good insulators of heat and electricity.
• They are mostly gases and sometimes liquid.
• Diamond is a form of Carbon and carbon has a valency of 4 therefore, diamond is a non-metal.

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Updated on: 10-Oct-2022

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