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Det periodiske system

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by Mai Bloch on 24 January 2013

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Transcript of Det periodiske system

HISTORIEN BAG Russisk kemiker

1869 fundne grundstoffer

Danske Niels Bohr

Kvantemekanikken Basseret på brug af bølgefunktioner til at beskrive partikler NAVNGIVNING Få grundstoffer kendt i oldtiden

Efter store videnskabsmænd eller tider

Einsteinium = Albert Einstein

Uran = Uranus METALLER - UNDER TRAPPEN Høje smeltepunkter

Faste ved stuetemperatur

Strøm- og varmeledende

De fleste kan strækkes, bøjes og rulles uden at knække
= fordi de består af løst bundnde valenselektroner Elektroner yderste skal i et atom
Bestemmelsen af et stofs kemiske og fysiske reaktion HOVEDGRUPPERNE OG IONBINDINGER Afiver eller modtager elektroner i yderste skal
for at ligne grundstofferne i Hovedgruppe 8
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