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The atom of an element is made up of 4 p...

The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What are its atomic number and mass number ?

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MBD-STRCTURE OF ATOM-Example
  1. An atom of the element is represented as "23^61X ? What does the numer...

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  2. An atom of the element is represented as "23^61X ? What is the number ...

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  3. The atom of an element is made up of 4 protons, 5 neutrons and 4 elect...

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  4. Calculate the number of neutrons in the following elements :"1^3H

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

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

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

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

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

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

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

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

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

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

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

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

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  17. Who discovered canal rays ?

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  18. Which charge is present on canal ray particles ?

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  19. Which charge is present on protons ?

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  20. Where are protons present in an atom ?

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