Define: Osmium is transition metal. Place in between Ruthenium and Hassium . It is hard and slightly brittle in nature. It is most densest element. And non toxic . But it’s oxide form is toxic and causes lung and eye damage. It is very precious metal . It is found in earth crust in the form of miridium minerals .it also obtained from platinum ore and by nickel refining
Discovery : it is discovered in 1803 by scientist Smithson Tennant
Origin of name : The name osmium is derived from Geek word ‘ osme’
Meaning of this word is smell.
Physical properties :
Atomic symbol: Atomic symbol of osmium is Os
Atomic number : Atomic number of osmium 76
In osmium 76 proton and 76 Electron is present
Atomic weight/ mass: Atomic weight of Osmium is 190.33
In osmium 76 proton and 114 neutron is present.
Position: it is place in 6th period ( row ) and 8th column (group)
Block : osmium is placed in d block
Colour :osmium show bluish white colour
Nature : osmium show solid form
Boiling point : boiling point of osmium is 5008 0C
Melting point : melting point of Osmium is 3033 0C
Isotopes: Osmium show 7 stable isotopes
184Os: atomic weight of this isotope is 183.9 Amu
In this isotope 76 proton ,76 Electron and 108 neutron is present
It is present 0.82% in nature
186Os: Atomic weight of this isotope is 185.9 Amu
In this isotope 76 proton, 76 Electron and 110 neutron is present
It is present 1.59% in nature
187Os: atomic weight of this isotope is 186.9 Amu
In this isotope 76 proton, 76 Electron and 111 neutron is present
It is present 1.96% in nature
188Os: Atomic weight of this isotope is 187.9 Amu
In this isotope 76 proton, 76 Electron and 112 neutron is present
It is present 13.24% in nature
189Os: atomic weight of this isotope is 188.9 Amu
In this isotope 76 proton, 76 Electron and 113 neutron is present
It is present 16.15% in nature
190 Os: Atomic weight of this isotope is 189.9 Amu
In this isotope 76 proton, 76 Electron and 114 neutron is present
It is present 26.26% in nature
192Os: atomic weight of this isotope is 191.9 Amu
In this isotope 76 proton, 76 Electron and 116 neutron is present
It is present 40.78% in nature.
Chemical properties :
Electronic configuration of osmium is [ Xe ] 4f14 5d66S2
Electronic configuration in concert of shell is 2,8,18,32,14,2
Valency : valency of osmium Is 2,3 or 4
Atomic radius : Atomic radius of osmium is 185 Pm
- osmium show limited uses
- It is use to make handy alloy
- It is use to formation of pen tips . And instrument pivots
- It is use to make needle and electrical contacts
- It is also use catalyst in chemical industry .
Question and Answer:
Q1. Define Osmium
Q2. Who discovered Osmium?
Q2. Physical properties of Osmium
Q4. Write Atomic Symbol of Osmium.
Q5. Write the Atomic number of Osmium.
Q6. On which block Osmium element is present?
Q7. What is the color of Osmium?
Q8. What is the Boiling point of Osmium?
Q9. What is the Melting point of Osmium?
Q10. Write the Isotopes of Osmium.
Q11. Show Electronic configuration of Osmium.
Q12. Write Electronic Structure of Osmium.
Q13. What is the Valency of Osmium?
Q14. Write the uses of Osmium element.
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