which of followings is a key property of metals ؟, they are good conductors of heat and electricity, they are brittle and dull in appearance, where are non metals generally located in the periodic table ؟, on the right side, on the left side, what is the physical state of most metals at room temperature ?, soild, gas, are non-metals malleable and ductile, no,they are brittle, yes, they can be hammered into sheets, which element is a liquid metal at room temperature?, mercury, iron, which of the follwing is a non - metal that exists as a gas ?, oxygen, copper, do metals tend to lose or gain electrons to from ions, they lose electrons to form positive ions, they gain electrons to form negative ions

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