Aluminium – Learn all details regarding Aluminium in Periodic Table i.e. Atomic Mass, Number, Physical, Chemical properties, Electronic configuration, Valency, Chemical reaction, Uses
Aluminium
Aluminium is light weight metal . It is present in earth crust in the form of bauxite. It is 2 nd most malleable metal and 3 rd common element in earth crust . Aluminium show non magnetic properties as well as it is good conductor of electricity and heat Chees, coffee tea , soft drinks contain aluminium
Discovery
Aluminium element is discovered by physician Hans Christian Orested at 1825
Origin of name :.
The name Aluminium is created from the word ‘ alum ‘ and ‘ alumen ‘ The meaning of this word is bitter salt
Physical properties:
1) Atomic symbol: Aluminium is represented by the symbol of Al
2) Atomic number
Atomic number of aluminium is 13
13 proton and 13 electron present in aluminium atom
3) Atomic weight/ mass:
Atomic weight of aluminium is 26.981 approximately 27
13 proton and 14 neutron present in the nucleus of aluminium
4) Position
It is place in periodic table at 3 row ( period) and 13 column ( group ) It is also known as boron family element . It is place just below boron element
5) Block
It is place in P block It’s outer shell electron present in p shell
6) Colour : it silvery grey in colour
7) Odour it show no odour Odourless solid
8) Taste : aluminium salt is bitter
9) Boiling point : Boiling point of aluminium is 24700C
10) Melting point : Melting point of aluminium is 6600C
11) Isotopes
Aluminium atom show two stable isotopes
26Al : this isotopes present in trace amount Atomic weight is 26 .( 13 proton and 13 neutron is present)
27Al : 13 proton and 14 neutron is present in this isotopes. Atomic weight is 27
Chemical properties :
1) Electronic configuration
Electronic configuration of aluminum is 1S2 . 2S2 2P6 3S2 3P1
Electronic configuration in concert of shell is 2,8, 3
2)Electronic structure :. 2 electron present in K shell , 8 electrons present in L shell and 3 electron present in M shell
3)Valency : Aluminium show 3 valency 3 valence electron present in outer shell
4) Atomic radius: Atomic radius of aluminium is 143 pm
5) Ractivity : lt is highly reactive element
6) Stability : aluminium is thermally stable element
Uses:
Aluminium foil use as wrapping material
It is use to make aeroplane parts
It is use in kitchen utensils
Aluminium wire used in electrical circuit
It is also use to make ships
Aluminium is used to make window
It is mostly use as a explosive.
It is use in watches .
Generally it is use as decorative paper and making toys
Question and Answer:
Q1. Define Aluminium
Q2. Who discovered Aluminium?
Q2. Physical properties of Aluminium
Q4. Write Atomic Symbol of Aluminium.
Q5. Write the Atomic number of Aluminium.
Q6. On which block Aluminium element is present?
Q7. What is the color of Aluminium?
Q8. What is the Boiling point of Aluminium?
Q9. What is the Melting point of Aluminium?
Q10. Write the Isotopes of Aluminium.
Q11. Show Electronic configuration of Aluminium.
Q12. Write Electronic Structure of Aluminium.
Q13. What is the Valency of Aluminium?
Q14. Write the uses of Aluminium element.