Gold

Gold :

Define: Gold is inner transition metal place below silver. It is highest atomic number element. It soft , malleable, ductile properties. It is bright and dense metal. It is non toxic and non corrosive metal. It is easily found in nature.

Discovery  Good is discovered from 3000 B. C.

Origin of name :. The name is derived from Anglo – sexon for the metal . And symbol is derived from Latin ‘aurum gold ‘

Physical properties :

Atomic symbol: Atomic symbol of gold is Au

Atomic number : Atomic number of gold is 79

In gold 79 proton and 79 Electron is present

Atomic weight/ mass: Atomic weight of Gold is 196.97

In gold 79 proton and 118 neutron is present

Position: Gold is place in periodic table at 6th period ( row) and 11th column ( group)

Block : Gold is place in d block

Colour : Gold show slightly reddish yellow colour

Nature : It is found in solid form

Boiling point : Boiling point of gold is 28360 C

Melting point : Melting point of gold is 1064 0C

Isotopes: gold show 1 stable isotopes

197Au: Atomic weight of this isotope is 196.9 Amu

In this isotope 79 proton,79 Electron and 118 neutron is present

It is present 100 % in nature

198Au:  Atomic weight of this isotope is 197.9 Amu .

In this isotope 79 proton, 79 Electron and 119 neutron is present

It is form by ß decay .

Chemical properties :

Electronic configuration

Electronic configuration of gold is [ Xe ] 4f14 5d10 6s1

Electronic configuration in concert of shell is 2,8,18,32,18,1

Electronic structure

Valency : Valency of gold is 2 ,3 or 1

Atomic radius :  Atomic radius of gold is 174 pm

Uses:

  • Gold is use in dentist clinic . The gold alloy is filled in teeth
  • It is use to make coins
  • It is extremely use in jewelry  in pure alloy form
  • It’s Nano particles use as industrial catalyst
  • It is use to treat some cases of arthritis .
  • It is use as row material in many scientific field
  • It is use in art and architecture ornament
  • It is mostly use to make trophies and medals commonly in Olympic games
  • It is used as money in some places
  • It is also use in electronic device
  • It is use to make ring ,bracelets , necklaces, eating and many jewelry

 

Question and Answer:

Q1. Define Gold

Q2. Who discovered Gold?

Q2. Physical properties of Gold

Q4. Write Atomic Symbol of Gold.

Q5. Write the Atomic number of Gold.

Q6. On which block Gold element is present?

Q7. What is the color of Gold?

Q8. What is the Boiling point of Gold?

Q9. What is the Melting point of Gold?

Q10. Write the Isotopes of Gold.

Q11. Show Electronic configuration of Gold.

Q12. Write Electronic Structure of Gold.

Q13. What is the Valency of Gold?

Q14. Write the uses of Gold element.

 

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