Lutetium (Lu)
Define: Lutetium is inner transition metal. Place at 14th number in lanthanide series . It is last element in lanthanide series . It is use to resist corrosion in dry air. It is rare earth metal and hard in nature . It is found in earth crust in the form of monazite minerals. It is low toxic . It is a smallest element and have high melting point.
Discovery : lutetium is discovered in 1907 by scientist George’s Urbain in Paris , France and independently by Charles James in new Hampshire ,USA
Origin of name :.The name lutetium is comes from ‘ Romans ‘ for paris ‘Lutetia ‘
Physical properties :
Atomic symbol: It is denoted by symbol Lu
Atomic number : atomic number of lutetium is 71.
In lutetium 71 proton and 71 electron is present.
Atomic weight/ mass: Atomic weight of Lutetium 174.9 Amu
In lutetium 74 proton and 104 neutron is present
Position : it is place in periodic table at 6th period and lanthanide group
Block : lutetium is place in f block
Colour :lutetium show silvery white colour
Nature :. Lutetium found in solid form in nature
Boiling point : Boiling point of Lutetium is 34020 C
Melting point : melting point of Lutetium is 1663 0C
Isotopes: Lutetium show 2 stable isotopes
175Lu: atomic weight of this isotope is 174.9 Amu
In this isotope 71 proton,71 electrons and 104 neutron is present
It is present 97.6% in nature
176Lu: Atomic weight of this isotope is 175.9 Amu
In this isotope 71 proton, 71 electrons and 105 neutron is present
It is present 2.60% in nature
Chemical properties
Electronic configuration
Electronic configuration of Lutetium is [Xe] 4f14 5d1 6s2
Electronic configuration in concert of shell is 2,8,18,32,9,2
Electronic structure
Valency : Valency of Lutetium is
Atomic radius : Atomic radius of Lutetium is 217 Pm
Uses:
- Lutetium is use as catalyst in oil refining
- Lutetium- 176 isotopes is use in cancer therapy
- Oxide form of Lutetium is use In detectors positron emissions tomography
- Lutetium – 176 isotopes use to measure age of minerals and meteorites
- Lutetium 177 Isotopes is use in lutetium therapy to treat tumors in nervous system.
Question and Answer:
Q1. Define Lutetium
Q2. Who discovered Lutetium?
Q2. Physical properties of Lutetium
Q4. Write Atomic Symbol of Lutetium.
Q5. Write the Atomic number of Lutetium.
Q6. On which block Lutetium element is present?
Q7. What is the color of Lutetium?
Q8. What is the Boiling point of Lutetium?
Q9. What is the Melting point of Lutetium?
Q10. Write the Isotopes of Lutetium.
Q11. Show Electronic configuration of Lutetium.
Q12. Write Electronic Structure of Lutetium.
Q13. What is the Valency of Lutetium?
Q14. Write the uses of Lutetium element.
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