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Bohr.s model can explain...

Bohr.s model can explain

A

The spectrum of hydrogen atom only

B

Spectrum of an atom or ion containing one electron only

C

The spectrum of hydrogen molecule

D

The solar specturm

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The correct Answer is:
B
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Give the correct order of initials T (True) or F (False) for following statements. (I) If electron has zero magnetic quantum number, then it must be present in s-orbital. (II) In orbital diagram, pauli’s exclusion principle is violated. (III) Bohr.s model can explain spectrum of the hydrogen atom. (IV) A d-orbital can accommodate maximum 10 electrons only.

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 electron spin magnetic moment of Fe^(2+) ion in FeSO_(4) in Bohr magnetons (B.M) is

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 quantum number not obtained from the solution of Schrodinger wave equation is

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 de Broglie wavelength (lambda) of the electron subjected to an accelerating potential of V volts is given by

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

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. Total number of ndoes 4d_(xy) orbital is

Bohr’s atomic model can explain the structure of:

What are the postulates of Bohr's model of hydrogen atom ? Discuss the importance of this model to explain various series of line spectra in hydrogen atom.

To explain the nature of radiation, James Clark Maxwell in 1864 put forward .Electromagnetic wave theory.. This theory could explain the phenomena of interference and diffraction but could not explain phenomena of black body radiation and photoelectric effect. Also, after the advent of electromagnetic wave theory, Rutherford.s model of atom suffered a serious drawback. To explain the phenomena of black body radiation and photoelectric effect, Max planck in 1900 put forward Planck.s quantum theory. BAsed on this theory, Neils Bohr in 1913 put forward Bohr.s model of atom which could overcome the drawback of Rutherford.s model and also explain the line spectral elements, especially the line spectra of hydrogen and hydrogen-like particles. Kinetic energy of the electron ejected when yellow light of frequency 5.2 xx 10^(14) s^(-1) falls on the surface of potassium metal (threshold frequency = 5 xx 10^(14) s^(-1) ) is

AAKASH SERIES-ATOMIC STRUCTURE-Level - I (EAMCET) (Exercise -II (Bohr theory))
  1. The first use of quantum theory to explain the structure of atom was m...

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  2. Bohr.s theory is applicable to

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  3. Bohr.s theory is not applicable to

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  4. (A) : Bohr.s orbits are called stationary orbits (R) : Electrons rem...

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  5. If the electron of a hydrogen atom is present in the first orbit. The ...

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  6. The angular momentum of an electron present in the excited state of hy...

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  7. According to Bohr.s theory, the angular momentum of electron in 5th or...

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  8. The angular momentum of a revolving electron in an orbit is equal to

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  9. Energy of an electron in n^(th) Bohr orbit is given as

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  10. The energy of the electron when it is at an infinite distance from the...

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  11. According to Bohr.s theory, when ever the electron drops from a higher...

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

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  13. The expression for radius of a Bohr orbit in hydrogen atom is

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  14. As the electron moves away from the nucleus its potential energy ---- ...

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  15. Identify the correctly matched set from the following lists {:(,"Lis...

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  16. Bohr.s model can explain

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

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

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  19. Radius of 3^(rd) Bohr orbit is

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  20. Velocity of the electron in the 1^(st) Bohr orbit

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