what are 3 physical properties of nickel?
['Nickel is silvery-white, hard, malleable, and ductile metal.', 'It is a good conductor of heat and electricity.', 'It is bivalent, that is it has a valency of two.', 'The metal dissolves slowly in dilute acids.', "It's melting point is 1453 °C and boiling point is 2913 °C."]