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WorksheetsChemistry - Periodic Table_Group VII
Total questions: 10
Worksheet time: 3mins
How many valence electrons do Group VII elements have?
1
3
5
7
Group VII elements are/have... (Check all that apply.)
Coloured
Low melting and boiling points
High melting and boiling points
Diatomic covalent molecules
Rearrange the halogen samples into the corresponding positions down the Group, according to their states at room temperature.
3, 4, 2, 1
3, 2, 1, 4
2, 3, 1, 4
1, 2, 4, 3
Down the Group, melting and boiling points _____ and the reactivity of each element _____.
decrease, increases
increase, decreases
stay the same, increases
increase, stays the same
Halogens are very reactive, because...
(Hint: the options must match!)
They have 1 extra electron
They have 7 valence electrons
They only need 1 more electron to achieve stable noble gas configuration
They only need to lose 1 electron to achieve stable noble gas configuration
What are two chemical properties of halogens?
Displacement reactions
Removal reactions
Reaction with metals
Reaction with non-metals
When a metal reacts with a halogen, the salt formed is called a...
Metal halogen
Metallic salt
Metal halide
Halide ions have a charge of...
+1
0
-1
-2
In this displacement reaction, which halogen is displaced and released?
Cl2 + KBr → K__ + __
K2
Br2
Cl2
None of the above
[Bonus question!] Group I metals react vigorously with water to form...? Check all that apply.
Metal hydroxide
Water
Hydrogen
Metal salt
