Lithium – Learn all details regarding Lithium in Periodic Table i.e. Atomic Mass, Number, Physical, Chemical properties, Electronic configuration, Valency, Chemical reaction, Uses
Lithium ( Li )
Lithium is a smallest metallic nature element .it is light weighted solid metal . It is 1st alkaline metal.
Discovery : Lithium is discovered in 1817 by scientist John Arthvedson .
Chemical properties
1) Atomic symbol : atomic symbol of lithium is Li
2) Atomic number : atomic number of lithium is 3 ( 3 number of protons and electron present in lithium atom )
3) Atomic mass : atomic mass of lithium is 6.9
(3 proton and 3 neutron is present in the nucleus of helium atom)
4) Nature : lithium show primordial and soft nature It is found in a solid state.
5) Colour : in nature it is found in silvery white colour
6) Melting point : melting point of lithium is 180. 5 0 C
7) Boiling point : boiling point of lithium is 1342 0 C
8) Position in periodic table : lithium is place in periodic table at 2 nd row ( period ) and 1 st column ( group )
9) Isotopes : lithium show two stable isotope .Lithium 7 and lithium 6
Lithium 7 (Li7 ) : this isotope contain 3 proton and 4 neutrons . It is 92.5% of natural lithium .
It is most common isotopes .
Lithium 6 ( Li6 ) : in this isotope 3 proton and 3 neutron present It is 7.5% of natural lithium.
Physical properties :
1) Electronic configuration : electronic configuration of lithium is 1S2 2S1
Electronic configuration in concert of shell is 2,1
2) Electronic structure :
3) Valency : Helium atom show 1 valency . (1 valance electron present in outer most orbit)
4) Atomic radius : atomic radius of lithium is 152 pm .
5) Chemical reactivity : Lithium is a highly reactive element . It is flammable when contact with air hence it stored in mineral oil
Uses :
1) It is use in batteries of mobile phones , laptops ,digital cameras , and electric vehicles
2) It is also use in batteries of toys and clocks
3) It is use in medicine to treat and prevention from mania ( abnormally mood excited disease )
4) It is use in pharmaceutical industries .
5) Lithium alloy use in industry
6) Lithium use to manufacture of rubber
Question and Answer:
Q1. Define Lithium
Q2. Who discovered Lithium?
Q2. Physical properties of Lithium
Q4. Write Atomic Symbol of Lithium.
Q5. Write the Atomic number of Lithium.
Q6. On which block Lithium element is present?
Q7. What is the color of Lithium?
Q8. What is the Boiling point of Lithium?
Q9. What is the Melting point of Lithium?
Q10. Write the Isotopes of Lithium.
Q11. Show Electronic configuration of Lithium.
Q12. Write Electronic Structure of Lithium.
Q13. What is the Valency of Lithium?
Q14. Write the uses of Lithium element.