Actinium
Define: Actinium is transition metal .which is place below lanthanum . It is soft metal. It is radioactive in nature . it is highly radio active elements .it is toxic due to high radioactivity . It is found in e in uranium ores.
Discovery : Actinium is discovered in 1899 by Andrew Debierne.
Origin of name :the name Actinium is comes from Greek ‘ actions ‘ meaning of this word is a ray
Physical properties
Atomic symbol: Atomic symbol of Actinium Is Ac
Atomic number : Atomic number of Actinium is 89
In Actinium 89 proton and 89 electron is present
Atomic weight/ mass: Atomic weight of Actinium is 227.03 Amu. In Actinium 89 proton,89 electron and 138 neutron is present
Position : it is place in periodic table at 7thperiod ( row ) and 3rd column ( group )
Block :it is place in d block
Colour :Actinium show silvery colour
State : Actinium present in solid state
Boiling point : Boiling point of Actinium 3200 0C
Melting point :melting point of Actinium is 1050 0C
Isotopes:
- 227Ac: Atomic weight of this isotope is 227.0 Amu
In this isotope 89 proton , 89 electron and 138 neutron is present
Chemical properties :
Electronic configuration
Electronic configuration of Actinium is [ Rn ] 6d1 7s2
Electronic configuration in concert of shell is 2,8,18,32,18,9,2
Electronic structure
Valency : Valency of Actinium is 3
Atomic radius : Atomic radius of Actinium is 195 Pm
Uses:
- Actinium show limited uses due to is radioactivity .
- Actinium is use in research field
- Actinium 225 isotope is use to cancer treatment
- It is use as neutron source
- It is also use in thermal electric power
Question and Answer:
Q1. Define Actinium
Q2. Who discovered Actinium?
Q2. Physical properties of Actinium
Q4. Write Atomic Symbol of Actinium.
Q5. Write the Atomic number of Actinium.
Q6. On which block Actinium element is present?
Q7. What is the color of Actinium?
Q8. What is the Boiling point of Actinium?
Q9. What is the Melting point of Actinium?
Q10. Write the Isotopes of Actinium.
Q11. Show Electronic configuration of Actinium.
Q12. Write Electronic Structure of Actinium.
Q13. What is the Valency of Actinium?
Q14. Write the uses of Actinium element.