خصائص الفلزات

Metals are materials distinguished by high electrical and thermal conductivity, in addition to their ductility and the possibility of formation when exposed to a certain temperature, and their high ability to reflect light rays, and metals constitute approximately three quarters of all chemical elements on the planet. It is the most widespread and abundant metals. In the Earth's crust: aluminium, iron, calcium, sodium, potassium, magnesium,

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