Question

chemical properties of aluminum​

Answer 1

1) Melting point: 660 °C (for AL 99,99 acc. to composition / alloying higher resp. lower)

2) Boiling point: 2500 °C (acc. to composition / alloying higher resp. lower)

3) Density: 2,70 g/cm³

4) Relative atomic mass 26,98.

5) Oxidation number: 3.

6) Atomic radius: 143,1 pm.

7) Ionic radius: 57 pm (+3)

8) Electrical conductivity: 36 m/Ohm·mm²

Answer 2

Answer:

Aluminum is a soft and lightweight metal. It has a dull silvery appearance, because of a thin layer of oxidation that forms quickly when it is exposed to air. Aluminum is nontoxic (as the metal) nonmagnetic and non-sparking. Aluminum has only one naturally occurring isotope, aluminium-27, which is not radioactive.

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