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In an atom when an electron jumps from K...

In an atom when an electron jumps from K-shel to M-shell

A

Energy is absorbed

B

Energy is emitted

C

Energy is neither absorbed nor emitted

D

Sometines energy is absorbed and some times emitted

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The correct Answer is:
A
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In an atom when an electron jumps from K-shell to M-shell

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In an atom the number electrons in M-shell is equal to the number of electrons in the K and L shell. Answer the following questions. (AS1) Which is the outer most shell?

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In an atom the number of electrons in M - shell is equal to the number of electrons in the K and L - shell . Answer the question. Explanation : 1) Number of electrons in K-shell (1 s^(2)) = 2 Number of electrons in L-shell (2s^(2) sp^(6)) = 8 Total number of electrons in k & L shells = 10 2) Given that number of electrons in M-shell is equal to number of electrons in K& L- shells 3) Hence number of electrons in M-shell (3s^(2) 3p^(6) 3d^(2)) = 10 4) But , we know that before filling of 3d orbital 4s should be filled (4s^(2)) 5) So , electronic configuration is 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2) 3d^(2) What is the atomic number of element ?

The change in velocity when electron jumps from the first orbit to the second orbit is

AAKASH SERIES-ATOMIC STRUCTURE-Objective exercise - 1
  1. As an electron is brought from an infinite distance close to nucleus o...

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  2. When electron falls from a higher energy to a lower energy level the d...

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  3. In an atom when an electron jumps from K-shel to M-shell

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  4. Radius of 3rd Bohr orbit is

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  5. The total energy of electron in an atom is a combination of potential ...

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  6. Match the following : {:("List - 1","List - 2"),((a) "second" ,(e) "...

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  7. What are the postulates of Bohr's model of hydrogen atom ? Discuss the...

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  8. Splitting of spectral lines under the influence of strong magnetic fie...

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  9. Radius of tenth Bohr orbit of the Hydrogen atoms is

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  10. Radius of 3rd Bohr orbit is

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  11. Velocity of the electron in the 1st Bohr orbit

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  12. The energy that is needed to remove an electron from the 1st Bohr orbi...

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  13. The speed of an electron in the inner most orbit of the hydrogen (Bohr...

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  14. The energy of an electron present in Bohr's second orbit of hydrogen a...

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  15. The de-Broglie equation treats an electron to be

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  16. Wavelength of the wave associated with a moving electron

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  17. The uncertainity principle and the concept of wave nature of matter we...

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  18. Bohr's postulate that mv r = (nh)/(2pi) is proved mathematically by

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  19. The momentum of a particle of wave length 1 Å is

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  20. The de Broglie wavelength of a particle with mass 1 g and velocity 100...

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