ionska vez in ionski kristali Flashcards

1
Q

koordinacijsko število

A

število anionov okoli kationov in obratno

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2
Q

kdaj nastanejo ionske spojine

A

pri reakciji kovin z nekovinami

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3
Q

NaCl kristal

A

6/6

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4
Q

CsCl kristal

A

8/8 cezijev kation večji od natrijevega

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5
Q

lastnosti ionskih spojin

A

pri sobni temperaturi so trdne snovi
kristali so krhki in drobljivi
imajo visoka tališča
v trdnem stanju ne prevajajo električnega toka
taline in vodne raztopine dobro prevajajo el tok
za el prevodnost potrebuješ nabite, gibljive delce
vrelišča še višja od tališč

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6
Q

česa ni v ionskih spojinah

A

molekul

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7
Q

kaksen je kristal

A

električno nevtralen

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8
Q

kaj vpliva na to kako težko ga bomo dali narazen

A

močen privlak
segrevanje raztapljanje=fizikalna sprememba

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