Comparing Lithium, Sodium, Caesium And
Lithium,Sodium,Potassium,Rubidium,Caesium and Francium are all part of group 1.They are metals that can be easily cut.After being cut,it is shiny but it quickly tarnishes due to the fact that the metal reacts quickly with oxygen or water.The shiny surfaces of Sodium quickly tarnishes more quickly than Lithium and Potassium more tarnishes more quickly than Lithium.This shows that the reactivity increases as we move down the group.
Figure 1
Elements Melting point Boiling point Thermal Conductivity Electrical Conductivity
Lithium 182 1342 85 W/(m k) 1.1 *107 S/m
Sodium 100 882.8 140 W/(m k) 2.1 * 107 S/m
Potassium 63 758.8 100 W/(m k) 1.4 *107 S/m
Rubidium 41 688 58W/(m k) 8.3 …show more content…
The trend with the thermal conductivity is that Lithium increase up till Sodium where after the thermal conductivity starts to decrease.There does not seem to be a clear cut trend with electrical conductivity.Lithium electrical conductivity is lower than Sodium but Sodium electrical conductivity is higher than Potassium.Rubidium electrical conductivity is higher than both Potassium and …show more content…
Chlorine is more reactive than bromine.This mean that chlorine can displace bromine in the compound sodium bromide and make sodium chloride plus bromine.Another example is that fluorine can displace chlorine.This is how the halogens can displace each other
chlorine + sodium bromide → sodium chloride + bromine
Task 2
There are two types of bonding.Covalent bonding and ionic bonding.
Ionic bonding occurs from positively ions and negatively ions,which attracts each other and bind together to form ionic compounds.Each ion is surrounded by an oppositely charged ion held by electrostatic attraction.
There are several way in which atoms can chemically form to create compounds.There are two different ions:
Metal ions
In some circumstances,metal atoms may lose electrons.This makes the atoms have more electrons than protons making a positive ion.
Non-metal ions
In some circumstances,Non-metal atoms may gain electrons.This makes the atoms have more electrons than protons making a negative
Figure 1
Elements Melting point Boiling point Thermal Conductivity Electrical Conductivity
Lithium 182 1342 85 W/(m k) 1.1 *107 S/m
Sodium 100 882.8 140 W/(m k) 2.1 * 107 S/m
Potassium 63 758.8 100 W/(m k) 1.4 *107 S/m
Rubidium 41 688 58W/(m k) 8.3 …show more content…
The trend with the thermal conductivity is that Lithium increase up till Sodium where after the thermal conductivity starts to decrease.There does not seem to be a clear cut trend with electrical conductivity.Lithium electrical conductivity is lower than Sodium but Sodium electrical conductivity is higher than Potassium.Rubidium electrical conductivity is higher than both Potassium and …show more content…
Chlorine is more reactive than bromine.This mean that chlorine can displace bromine in the compound sodium bromide and make sodium chloride plus bromine.Another example is that fluorine can displace chlorine.This is how the halogens can displace each other
chlorine + sodium bromide → sodium chloride + bromine
Task 2
There are two types of bonding.Covalent bonding and ionic bonding.
Ionic bonding occurs from positively ions and negatively ions,which attracts each other and bind together to form ionic compounds.Each ion is surrounded by an oppositely charged ion held by electrostatic attraction.
There are several way in which atoms can chemically form to create compounds.There are two different ions:
Metal ions
In some circumstances,metal atoms may lose electrons.This makes the atoms have more electrons than protons making a positive ion.
Non-metal ions
In some circumstances,Non-metal atoms may gain electrons.This makes the atoms have more electrons than protons making a negative