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An oil drop has 8.01 xx 10^(-19) C char...

An oil drop has ` 8.01 xx 10^(-19) C` charg .Calculate the number of electrons in this drop.

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The correct Answer is:
5
Charge on lil drop ` = 8. 01 xx 10^(-19) C`
` :. 1 . 602 xx 10^(-19 ) C` is charge on one electron
` :. 8. 01 xx 10^(-19) C` charge on
` = ( 8. 01 xx 10^(-19))/(1. 602 xx 10^(-19)) = 5` electrons .
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P BAHADUR-ATOMIC STRUCTURE-Exercise 6
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  4. The wavelngth of m^(th) shell to 2^(nd) shell . How orbital is 4103...

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  5. An electron jumps form 5^(th) sehell to 2^(th) shell . How many state ...

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  6. Find out the number of waves made by a Bohr's electron in one complet...

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  7. Find out the numer fo angualr nodes in the orbital to which the last e...

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  8. The differnce between nth and (n+1) the Bohr radius of B atom is equa...

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  9. Find out the degeneracy of hydrogen atom that has the erngy equal to ...

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  10. The magneit moment of a transitio metal is sqrt(15) B.M . Fin dout th...

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  11. Magnetic moment fo A^(2+) ion is 5.48 xx 10^(-23) J//R. Find out the...

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  12. Find the ratio ofenergy of a photon of 2000Å wavelength radiation to ...

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  13. The electron in Li^(2+) ions are exctied form gound stte by absorbing...

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  14. What is the ratio of wavelength of (II) line fo Balmer series and (I) ...

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  15. Ionisation potential of hydrogen atom is 13 . 6 eV. Hydrogen atom in ...

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  16. The velocity of an electron in a certain Bohr's orbibit of H-atom bear...

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  17. A single electron system has ionization enrgy 1. 118 xx 10^7 J mol^(-...

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  18. Find the total numer of degenerate orbitals in psi (4, 2, 0) of H-ato...

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  19. Find the number of waves in an orbit fo H-atom having radius equal to ...

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  20. The work function (phi) of some metals is listed below. The number of...

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