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What is mass number?...

What is mass number?

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Atomic mass' A' The total number of protons and neutrons present in the nucleus of an atom of an element.
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SUBHASH PUBLICATION-STRUCTURE OF ATOM-NUMERICAL PROBLEMS AND ANSWERS
  1. What is mass number?

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  2. Calculate the wave number, wavelength and frequency first line of hydr...

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  3. Calculate the num her of neutrons present in ""(92)U^(235) isotope.

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  4. Calculate the wavelength and wave numbers of the first and second line...

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  5. Chlorine (Z =17) has two isotopes with mass numbers 35 and 37, relativ...

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  6. Calculate the wave number and wavelength of the first spectral line of...

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  7. Calculate the wave number of the spectral line when electron jumps fro...

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  8. In a hydrogen atom, an electron jumps from third orbit to the first or...

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  9. An atom of an element has 29 electrons. The nucleus of the atom contai...

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  10. Calculate the wavelength of a wave of frequency 10^(12) Hz, travelling...

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  11. Calculate the frequency of electromagnetic radiation having the wavele...

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  12. Calculate the frequency and energy per quantum of a radiation with a w...

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  13. Calculate the number of photon of light with a wavelength of 6000 Å th...

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  14. A major line in an atomic emission spectrum occurs at 450 nm. Find the...

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  15. Calculate the wave number, wavelength and frequency of the first line ...

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  16. The red light of neon signs has a wavelength of 693 nm. Find the energ...

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  17. Calculate the wavelength of an electron moving with a velocity of 2.5x...

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  18. Find the mass of an electrically charged particle movng with a velocit...

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  19. Calculate the energy of a photon whose wavelength is 3.864xx 10^(-7) m...

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  20. Calculate the de Broglie wavelength of an electron of mass 9.11 xx 1...

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  21. Calculate the de Broglie wavelength of a bullet of mass 25g moving w...

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