PERIODNI SISTEM Flashcards

1
Q

plamen
litija Li
natrija Na
kalija K

A

rdeč
rumena barva
vijoličen

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2
Q

potečejao kere reakcije

A

=> 2Na(s) + O2(g) –> Na2O2(s)

2Na(s) + H2O(l) –> 2NaOH(aq) + H2(g)
4Li(s) + O(g) –> 2Li2O(s)

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3
Q

kako REAKTIVNOST elementov NARAŠČA?

A

po skupini NAVZDOL

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4
Q

alkalijski elementi imajo koliko in kje valenčnih elektronov?

A

1, v s-orbitali

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5
Q

katere kovine imajo manjšo gostoto kakor voda?

A

LI, K, Na

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6
Q

kaj vse narašča navzdol?

A

REAKTIVNOST

VELIKOST RADIJA

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7
Q

klorovica

A

vodna raztopina klora

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