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Worksheetsgroup 17
Total questions: 10
Worksheet time: 5mins
Which of the following is a solid at room temperature?
Fluorine
Chlorine
Bromine
Iodine
Reactivity of halogen decreases going down the group because
The 8th electron difficult to attract by nucleus
Atomic size decreases down the group
Electrons are closer to the nucleus
Screening effect decreases
Element X dissolves in water to produce a solution that turns the blue litmus paper red and then decolourised. What is element X?
Sodium
Bromine
Sulphur
Neon
Based on what you have learnt, predict the properties of Astatine. Given that Astatine is an element in Group 17 of the Periodic Table.
Dark brown colour gas with a rapid reaction with H2O to give 2 acids
Black colour solid with a no reaction with H2O
Black colour solid with a very slow reaction with H2O to give 2 acids
Dark brown colour solid with a no reaction with H2O
Element of Group 17 show the following properties except for
The acidity of HX increases down the group
Thermal stability of HX decreases down the group
Volatility of halogen increases down the group
Boiling point of halogen increases down the group
Identify the correct order of acidic strength for H-X.
HCl>HBr>HI
HCl>HI>HBr
HI>HCl>HBr
HI>HBr>HCl
When solid potassium iodide is heated with concentrated sulphuric acid, a coloured fume, Y is liberated. When aqueous silver nitrate is added to aqueous potassium iodide, a precipitate Z is formed.
Which of the following is correct with regards to the colour of Y and Z?
Y: Purple, Z: Yellow
Y: Brown, Z: Yellow
Y: Brown, Z: Cream
Y: Yellow, Z: White
Which of the following has the lower van der waals forces than chlorine?
fluorine
bromine
iodine
astatine
The following statements describe the characteristics of an element
- has an electron configuration 2.8.7
- a greenish-yellow gas at room temperature
- exists as a diatomic molecule
This element is probably
sodium
neon
bromine
chlorine
An element V has a proton number 9 and W has a proton number 17. Which of the given statement is true?
Both V and W can conduct electricity
V and W are diatomic
The atomic size of V is bigger than W
W is more reactive than V
