Tantalum ( Ta )

Define: Tantalum is transition metal . It is rarely found element . It is hard in nature and show lustrous structure .it is highly non corrosive metal hence use to prevention of corrosion. Tantalum is non toxic and strong

Discovery :  Tantalum is discovered in 1802 by scientist Andsrs Gustav Ekeberg

Origin of name :. The name derived from the name of King Tantalus

Physical properties :

Atomic symbol: It is denoted by symbol Ta

Atomic number : atomic number of Tantalum is 73

In tantalum 73 proton and 73 electron is present

Atomic weight/ mass: Atomic weight of tantalum is 180.95 Amu. In tantalum 73 proton and 108 neutron is present

Position : it is place in periodic table at 6th period ( row) and 5th column ( group )

Block : it is place in d block

Outermost shell electron place in d orbit

Colour :Tantalum show blue grey colour

Nature : Tantalum present in solid form

Boiling point : Boiling point of Tantalum is 5455 0C

Melting point :Melting point of Tantalum is 3017 0C

Isotopes: Tantalum show 2 stable isotopes

180Ta: atomic weight of this isotope is 179.9 Amu

In this isotope 73 proton,73 electron and 107 neutron is present

It is present 0.01.% in nature

181Ta: atomic weight of this isotope is 180.9 Amu

In this isotope 73 proton, 73 electron and 108 neutron is present

It is present 99.9% in nature

Chemical properties 

Electronic configuration : Electronic configuration of Tantalum is [ Xe] 4f14 5d3 6S2

Electronic configuration in concert of shell is 2,8,18,32,11,2

Electronic structure

Valency : valency of Tantalum is 3or 4or 5

Atomic radius : atomic radius of Tantalum is 200 Pm


  • Tantalum is use to make neon lights
  • It is mainly use to make lances in glass and Ac or DC rectifiers
  • It is mostly use to make turbine blades , rocket nozzles ,and make caps for supersonic aircraft
  • Isotopic form of Tantalum is use in surgical instruments in dental
  • It is also use in electronic industry for the making of capacitors, resistors, laptops and cameras .


Question and Answer:

Q1. Define Tantalum

Q2. Who discovered Tantalum?

Q2. Physical properties of Tantalum

Q4. Write Atomic Symbol of Tantalum.

Q5. Write the Atomic number of Tantalum.

Q6. On which block Tantalum element is present?

Q7. What is the color of Tantalum?

Q8. What is the Boiling point of Tantalum?

Q9. What is the Melting point of Tantalum?

Q10. Write the Isotopes of Tantalum.

Q11. Show Electronic configuration of Tantalum.

Q12. Write Electronic Structure of Tantalum.

Q13. What is the Valency of Tantalum?

Q14. Write the uses of Tantalum element.


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