Arsenic is an Metalloids . It show brittle, brittle , shiny nature like metal . It is also conduct electricity .It is found in earth crust in combined formed. Arsenopyrite is mineral which contains arsenic. In our body require very low amount of arsenic
It is poisonous in nature. It is called as poison king . Small amount of arsenic is sufficient for killed .
Discovery : arsenic is discovered in 1600 by scientist Albertus Mangus
Origin of name :. The name arsenic is originated form Greek word ‘ arsenikon‘.
Meaning of this word is yellow pigment orpinment
Physical properties :
Atomic symbol: Arsenic is represented by the symbol As
Atomic number : atomic number of arsenic is 33
In arsenic 33 proton and 33 electron is present
Atomic weight/ mass: : atomic weight of arsenic is 74.9
In arsenic 33 proton and 42 neutron is present
Position : it is place in periodic table at 4 thperiod th column ( group)
It is place between phosphorous and antimony
Block : it is place in P block
Colour :arsenic show silver grey colour
Nature:. Arsenic is found in solid state in nature
Boiling point :boiling point of arsenic is 6140 C
Melting point :melting point of arsenic is 8170 C
Isotopes:
Arsenic show 1 stable isotope
75Ar: atomic weight of this isotope is 74.9
In this isotope 33 proton,33 electron and 42 neutron is present
It is 100% in nature
Arsenic show 33 radio active isotopes.
In which 73As isotope is long lived isotopes
Chemical properties :
Electronic configuration
Electronic configuration of arsenic is [ A
r] 3d10 4S2 4P3
Electronic configuration in concert of shell is 2,8,18,5
Electronic structure
Valency :Arsenic show valency3
In valence shell 3 electron is present
Atomic radius : atomic radius of arsenic is 114 pm
Uses:
Arsenic use in rat poison
Arsenic is Generally use in semiconductor .
It is use to make insecticide .
Arsenic is use to formed special type of glass
It is mostly used to preserve the thing which is made from wood .
It is use for manufacturing of bullets
It is use to make bronze alloy ..
Arsenic is use to make pigments , paints
Question and Answer:
Q1. Define Arsenic
Q2. Who discovered Arsenic?
Q2. Physical properties of Arsenic
Q4. Write Atomic Symbol of Arsenic.
Q5. Write the Atomic number of Arsenic.
Q6. On which block Arsenic element is present?
Q7. What is the color of Arsenic?
Q8. What is the Boiling point of Arsenic?
Q9. What is the Melting point of Arsenic?
Q10. Write the Isotopes of Arsenic.
Q11. Show Electronic configuration of Arsenic.
Q12. Write Electronic Structure of Arsenic.
Q13. What is the Valency of Arsenic?
Q14. Write the uses of Arsenic element.