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The radial distribution curve of 2s subl...

The radial distribution curve of 2s sublevel consists of x nodes, x is

A

1

B

3

C

2

D

0

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The correct Answer is:
A
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Just as Bohr.s model of atom was developed on the basis of planck.s quantum theory, wave mechanical model of atom has been developed on the basis of quantum mechanics. The herat of quantum mechanism is Schrodinger wave equation which in turn is based on Heisenberg.s uncetainity principle and de broglie concept of dual nature of matter and radiation. Bohr model could explain the main lines of hydrogen or hydrogenic spectra but could not explain their fine structure. To explain this, it was suggested that each level consists of a number of sublevels, it was suggested that each level consists of a number of sublevels, the transitions between which gave rise to closely spaced lines. The numbers representing the main energy level are called Princiapl Quantum Number (n) while those representing sublevels are called Azimuthal Quantum numbers (l) and these determine the angular momentum of the electron. The orbital angular Number (m) which is just like a further split of a sublevel into finer sublevels. Lastly the electron may rotate or spin about its own axis given rise to Spin Quantum number (s) which determines the angular momentum of the electron. The orbital angular momentum of 2p electron is

AAKASH SERIES-ATOMIC STRUCTURE-Objective exercise - 2B
  1. Uncertainity in the position of an electron (mass = 9.1 xx 10^(-31) kg...

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  2. (A) : The radial probability distribution curves of 1s, 2p, 3d orbital...

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  3. The radial distribution curve of 2s sublevel consists of x nodes, x is

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  4. Which pair of orbitals have electronic density along the axis

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  5. The maximum number of sub-level, orbital and electrons in N shell of a...

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  6. The values of four quantum numbers of valence electron of an element a...

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  7. Number of electrons with +1/2 spin in n=3 is

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  8. Number of electrons with -1/2 spin in n=4 is

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  9. For which one of the following sets of quantum numbers an electron wil...

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  10. Which of the following sets of quantum numbers represents the highest ...

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  11. Which of the following elements has least number of electrons in its "...

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  12. The atomic number (Z) of an element is 25. In its ground state, how ma...

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  13. The following species has the lowest number of electrons in the valenc...

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  14. The number of unpaired electrons present in the first excited state of...

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  15. The number of electrons in M-shell of an element with atomic number 24...

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  16. The atomic number of an element is 35. what is the total number of ele...

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  17. If the atomic number of an element is 36, the number of electrons pres...

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  18. The number of unpaired electrons present in palladium (Z=46) atom is

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  19. Which of the following has maximum number of unpaired electrons (atomi...

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  20. Which one of the following has more number of unpaired d-electrons ?

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