Barium :
Define: Barium is alkaline earth metal place 5th number in alkaline earth metal group. It show soft shiny structure. Barium is high chemically reactive metal .It is toxic in nature and easily soluble in water and acid. Barium is found in earth crust in combined formed. The barium metal found in earth crust in barite and witherite ore.
Discovery : barium is discovered in 1808 by scientist Humphry Davy
Origin of name :. The name Barium is derived from Greek word ‘Barys’ meaning of this word is Heavy.
Physical properties :
Atomic symbol: Barium is denoted by symbol Ba
Atomic number :Atomic number of Barium is 56
In barium 56 proton and 56 electron is present.
Atomic weight/ mass:
Atomic weight of Barium is 137.33 Amu
In barium 56 proton and 81 neutron is present
Position :Barium is place in periodic table at 2nd column ( group) and 6th period ( row)
Block : barium is place in s block
Colour : Barium show silver colour.
Nature : barium found in solid form in nature
Boiling point :boiling point of Barium is 1845 0C
Melting point :melting point of Barium is 727 0C
Isotopes:
Barium show 7 stable isotopes
130Ba : atomic weight of this isotope is 129.9 Amu
In this isotope 56 proton ,56 Electron and 74 neutron is present
It is present 0.1% in nature
132Ba: atomic weight of this isotope is 131.9 Amu
In this isotope 56 proton, 56 Electron and 76 neutron is present
It is present 0.1 % in the nature
134Ba: atomic weight of this isotope is 133.9 Amu
In this isotope is 56 proton, 56 Electron and 78 neutron is present
It is present 2.4% in the nature
135Ba : Atomic weight of this isotope is 134.9 Amu
In this isotope 56 proton, 56 Electron and 79 neutron is present
It is present 6.5 % in nature
136Ba: Atomic weight of this isotope is 135.9 Amu
In this isotope 56 proton, 56 Electron and 80 neutron is present
It is present 7.8 % in nature
137Ba: Atomic weight of this isotope is 136.9 Amu
In this isotope 56 proton, 56 Electron and 81 neutron is present
It is present 11.2% in nature
138Ba: Atomic weight of this isotope is 137.9 Amu
In this isotope 56 proton, 56 Electron and 82 neutron is present
It is present 71.9 % in the nature
Chemical properties :
Electronic configuration
Electronic configuration of Barium is [ Xe ] 6S2
Electronic configuration in concert of shell is 2,8,18,18,8, 2
Electronic structure
Valency : valency of Barium is 2
Atomic radius : Atomic radius of Barium is 268 Pm
Reactivity : : barium is react with water and air
Uses:
It’s carbonate form use in Rat poisons
Nitrate use in fireworks gives green colour
Barium is use in Drilling fluid in oil and gas wells
It is use in paints and glass making
Barium is also use to make bricks ,tiles and rubber .
Barium is use in paper and rubber industries
Barium is use to make white pigment
Barium is mostly used in electrodes in sparking plug
It is also use in vacuum tubes as a drying and oxygen removing agent
It’s oxide form use for coating to electrode in fluorescent lamp
Question and Answer:
Q1. Define Barium
Q2. Who discovered Barium?
Q2. Physical properties of Barium
Q4. Write Atomic Symbol of Barium.
Q5. Write the Atomic number of Barium.
Q6. On which block Barium element is present?
Q7. What is the color of Barium?
Q8. What is the Boiling point of Barium?
Q9. What is the Melting point of Barium?
Q10. Write the Isotopes of Barium.
Q11. Show Electronic configuration of Barium.
Q12. Write Electronic Structure of Barium.
Q13. What is the Valency of Barium?
Q14. Write the uses of Barium element.