Welcome to the Quiz!
This quiz contains 13 questions from a mix of 1 subtopics.
Which hydrogen halide requires the highest temperature for decomposition?
HF
HCl
HBr
HI
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Which halogen forms an equilibrium mixture with hydrogen gas on heating?
chlorine
fluorine
bromine
iodine
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Which hydrogen-halide bond is the weakest?
H-Cl
H-Br
H-F
H-I
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Iodine is reactive than bromine.
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Which factors increase as we move down group 7?
(Select all that apply).
shielding
tendency to gain electrons
atomic radius
nuclear charge
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Which halogen is the strongest oxidising agent?
iodine
fluorine
chlorine
bromine
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What is the charge of halogens when they become negative ions?
+1
-1
-2
+2
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What happens to halogens in redox reactions?
they lose electrons and are reduced
they lose electrons and are oxidised
they gain electrons and are reduced
they gain electrons and are oxidised
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What happens to the oxidising ability of halogens going down group 7?
it decreases
it stays the same
it increases
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What happens when chlorine water is added to an aqueous solution of sodium bromide?
the solution remains colourless
the solution turns purple
the solution turns pale green
the solution turns yellow
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Which statement is correct?
F- is oxidised by Cl2
Br- is oxidised by F2
Cl- is oxidised by Br2
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What type of reaction occurs when halogens react with halides?
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Which property of group 7 elements decrease as we go down group 7?
the reducing ability of the halides
the reducing ability of the halogens
the oxidising ability of the halides
the oxidising ability of the halogens
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