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Calculate the number of neutrons in the ...

Calculate the number of neutrons in the following elements :`"_18^40Ar`

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MBD-STRCTURE OF ATOM-Example
  1. Calculate the number of neutrons in the following elements :"1^3H

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  2. Calculate the number of neutrons in the following elements :"17^37Cl

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  3. Calculate the number of neutrons in the following elements :"18^40Ar

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  4. Give two conditions under which cathode rays are produced.

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  5. The electronic configuration of P (Z=15) is 2, 8, 5, why is the valen...

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  6. What information is conveyed by the statement that the mass number of ...

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  7. Is it possible for an atom to have 12 protons and 13 electrons ? Expla...

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  8. Give the important isotopes of hydrogen,carbon, oxygen and chlorine. I...

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  9. Chlorine has two isotopes "17^35Cl And "17^37Cl in the ratio 3:1. Calc...

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  10. Out of 18X and 16Y which atom is chemically more reactive ?

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  11. An element has 12 neutrons and mass number 23. Give the atomic number ...

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  12. Calculate number of protons, neutrons and electrons in "92^235U and "9...

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  13. Calculate the number of electrons, protons and neutrons is "9^19X . Al...

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  14. Who discovered canal rays ?

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  15. Which charge is present on canal ray particles ?

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  16. Which charge is present on protons ?

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  17. Where are protons present in an atom ?

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  18. What were the characteristics of an atom according to Dalton ?

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  19. Which discovery is against Dalton's theory ?

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  20. Who proposed the first model for the structure of atom ?

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