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Algemene chemie oefeningen hoofdstuk 6
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Algemene chemie oefeningen Mastering Chemistry met uitwerking (Hoofdstuk 6)
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Chemie oefeningen hoofdstuk 61. Wat is de elektronen configuratie van het ion Hg 2+?
Oplossing:
Normaal: [Xe]4f145d106s2 maar 2+ dus 2 elektronen minder dus [Xe]4f145d10
2. Wat is de elektronen configuratie van Se 2-?
Oplossing:
[Ar]3d104s24p6
3. Welk ion heeft dezelfde elektronen configuratie als Kr? Se 2-, Rb+, Br-
Oplossing:
Allemaal
4. Welk ion heeft de grootste straal? Ca+2, Ca+1, Br-, K+
Oplossing:
Br- want een kation is kleiner dan een anion
5. Welk element heeft de hoogste ionisatie energie: Berillium, boor, waterstof, lithium?
Oplossing:
Waterstof want waterstof neemt heel graag een elektron op
6. Hoeveel valentie elektronen heeft S ?
Oplossing:
Groep 6A dus 6
7. Om de edelgasconfiguratie te bekomen, hoeveel elektronen moet zwavel dan opnemen?
Oplossing:
2
8. Welke heeft geen octet van elektronen in zijn buitenste schil? Se 2-, C4-, Mg+, Sb3-
Oplossing :
Mg+ want dan kom je uit bij Na en dit is geen edelgas
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