
blok d
Authored by Ola O
Chemistry
3rd Grade
20 Questions
Used 4+ times

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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Konfiguracja elektronów walencyjnych atomu chromu ma postać:
4s2 3d4
4s1 3d5
4s1 4d5
4s2 4d4
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Chrom tworzy trzy tlenki: I-CrO, II- Cr2O3 i III- CrO3. Wskaż podpunkt, w którym prawidłowo podano charakter chemiczny tych tlenków
I- zasadowy, II- amfoteryczny, III- kwasowy
I- amfoteryczny, II - zasadowy, III- kwasowy
I- amfoteryczny, II - kwasowy, III- zasadowy
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Zaznacz poprawie zapisane równanie reakcji Cr(OH)3 z zasadą sodową
Cr(OH)3 + 3NaOH -> Na3[Cr(OH)6]
Cr(OH)3 + NaOH -> Na3[Cr(OH)6]
Cr(OH)3 + 3NaOH -> Cr3[Na(OH)6]
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Po dodaniu roztworu kwasu siarkowego (VI) do roztworu chromianu (VI) potasu:
nie zaobserwujemy żadnych zmian, ponieważ chromiany (VI) są trwałe w środowisku kwasowym
roztwór zmieni barwę z żółtej na pomarańczową
roztwór zmieni barwę z pomarańczowej na żółtą
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Atom manganu zawiera:
2 elektrony walencyjne
7 elektronów walencyjnych
5 elektronów walencyjnych
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Najwyższy stopień utlenienia jaki przyjmuje chrom w związkach chemicznych to:
II
III
VI
VII
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Najwyższy stopień utlenienia, jaki przyjmuje mangan w związkach chemicznych, to:
II
III
VI
VII
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