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Untitled Prezi

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by

aljaz trupej

on 13 October 2013

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Transcript of Untitled Prezi

Natrij
Litij
Vrstno število: 3
Relativna atomska masa: 6.941
Gostota: 535 kg/m3
Barva plamena: karminsko rdeča
Tališče: 180°C
Lastnosti
Kalij
Vrstno število: 19
Relativna atomska masa: 39.098
Gostota: 856 kg/m3
Barva plamena: Vijolična
Tališče: 63°C
Rubidij
Vrstno število: 37
Relativna atomska masa: 85.478
Gostota: 1532 kg/m3
Barva plamena: rumeno - vijolična
Tališče: 39°C
Cezij
Vrstno število: 55
Relativna atomska masa:132.91
Gostota: 1930 kg/m3
Barva plamena: modro - vijolična
Tališče: 28°C
Alkalijske kovine
Aljaž Trupej
1. a
2012/13

Francij
- imajo sijaj
- mehke
- zelo reaktivne
- lahko jih režemo z nožem
- hitro oksidirajo
- zlahka izgubijo zunajni elektron
Vrstno število: 11
Relativna atomska masa: 22.99
Gostota: 968 kg/m3
Barva plamena: rumena
Tališče: 97°C
Vrstno število: 87
Relativna atomska masa: 223
Gostota: 1870 kg/m3
Barva plamena: ni znana
Tališče: 27°C
Uporaba
Imajo veliko različnih funkcij
Cezijeva ura
Natrijeva svetilka
Natrijev klorid
Full transcript