WorksheetsGroup 14 Elements- STPM
Total questions: 15
Worksheet time: 8mins
Which of the following physical properties increases when going down Group 14?
Metallic character
Melting point
Solubility
First ionisation energy
The electrical conductivity of carbon (graphite) is much higher than silicon. This is because...
carbon has delocalised electrons
carbon has a more compact crystal lattice
carbon has more valence electrons than silicon
carbon has a more metallic character than silicon
When an element can exists in different forms,it is said to exhibits...
amphoteric character
isotropy
allotropy
isomerism
Graphite is used as a lubricant because graphite has
delocalised electrons
a giant structure
is a non-metal
a layer structure
Which of the following is not true when tin is compared to lead?
its tetrachloride is more stable
its +2 oxidation state is more stable
It is less reactive
Its first ionisation energy is higher
Which of the Group 14 elements can undergo catenation?
(a)
Which one of the following does not have a giant molecular structure?
C
Si
SiCl4
PbO
Which one of the following oxides is most acidic in nature?
GeO
GeO2
SnO
PbO2
Which of the following oxides is most stable to heat?
CO2
GeO2
SnO2
PbO2
Oxide of which element when added to soda-lime glass will produce Pyrex glass?
Boron
Cobalt
Lead
Silver
Silicones are (a)
Which of the following property best explain the ability of carbon to undergo catenation?
High ionisation energy
Small atomic radius
Ability to form multiple bonds
Strong carbon-carbon bond
A mixture of tin and lead are heated strongly in air and is then allowed to cool. The residue will contain...
SnO2 and PbO
SnO and PbO
SnO and Pb3O4
PbO, PbO2 , SnO and SnO2
Which of the following properties of the G14 tetrachlorides increases when going down the group?
Stability
Basicity
Boiling point
Thermal stability
What gas is produced when germanium(IV) chloride is added to water?
Cl2
HCl
HOCl
Cl2O
