physical and chemical properties and uses of silver
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physical and chemical properties and uses of silver
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Explanation:
silver is nearly white, lustrous, soft, very ductile, malleable, it is an excellent conductor of heat and electricity. It is not a chemically active metal, but it is attacked by nitric acid (forming the nitrate) and by hot concentrated sulfuric acid.
Atomic number
47
Atomic mass
107.87 g.mol -1
Electronegativity according to Pauling
1.9
Density
10.5 g.cm-3 at 20°C
Melting point
962 °C
Boiling point
2212 °C
Vanderwaals radius
0.144 nm
Ionic radius
0.126 nm
Isotopes
11
Electronic shell
[ Kr ] 4d10 5s1
Energy of first ionization
758 kJ.mol -1
Energy of second ionization
2061 kJ.mol -1
It is used for jewellery and silver tableware, where appearance is important. Silver is used to make mirrors, as it is the best reflector of visible light known, although it does tarnish with time. It is also used in dental alloys, solder and brazing alloys, electrical contacts and batteries.