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Physical and chemical properties of aluminum

Physical property

It has low density, is non-toxic, has high thermal conductivity, has excellent resistance to corrosion, and can be cast, machined and moulded quickly. It's non-magnetic and non-sparking as well. It is the second most ductile and the sixth most malleable metal.

Chemical property

Atomic number-13

Electronegativity according to Pauling-1.5

Density-2.7 g.cm -3 at 20 °C

Melting point- 660.4 °C

Boiling point- 2467 °C

Explanation:

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.