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1.7. Group 7 Elements GCSE Chemistry AQA Flashcards | StudBud
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1.7. Group 7 Elements GCSE Chemistry AQA
1.7. Group 7 Elements GCSE Chemistry AQA
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1.7. Group 7 Elements GCSE Chemistry AQA
Flashcards
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Questions
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Answers
1
Why do halogens form diatomic pairs
To form ionic bonds.
To gain electrons to their outer shell.
To complete their outer shells.
This happens at low temperatures.
2
All halogens are toxic.
True
False
3
When are the halogens referred to as halides?
When they form diatomic pairs
When they are solids
When they form ionic compounds
When they are gases
4
Which name is used for group 7 atoms?
Alkali metals
Halides
Noble gases
Halogens
5
Why do the halogens become less reactive down the group?
It is easier to lose their outer shell electrons.
The electrons are closer to the nucleus.
The electrostatic attraction increases.
It is harder to attract an electron to join the outer shell.
6
Halogen atoms have how many electrons on their outer shell?
7
6
Their shells are full.
5
7
Which halogens would displace bromine when reacting with sodium bromide.
Select two.
Chlorine
Iodine
Bromine
Fluorine
8
Identify which of these halogens are solid at room temperature.
Bromine
Chlorine
Fluorine
Iodine
9
A molecule made from two atoms of the same element are referred to as a diatomic pair.
False
True
10
What charge do halide ions have?
+1
-1
+2
0
11
Melting and boiling points decrease down the group.
True
False
12
What charge do halogen atoms have?
-1
0
+1
+2
13
What compound will form in this reaction?
lithium fluoride
lithium chloride
lithium bromide
chlorine bromide
