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Who developed quantum mechanical model o...

Who developed quantum mechanical model of atom ?

A

Erwin Schrodinger

B

Neil Bohr

C

Planck

D

Thomson

Text Solution

Verified by Experts

The correct Answer is:
A
Erwin Schrodinger
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Knowledge Check

  • The basis of quantum mechanical model of an atom is

    A
    Angular momentum of electron
    B
    Qusntum numbers
    C
    Dual nature of electron
    D
    Black body radition

  • 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

    A
    principal quantum no.
    B
    Azimuthal Quantum No
    C
    Magnetic Quantum No
    D
    Spin Quantum No

  • 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

    A
    `(eh)/(sqrt(2mV))`
    B
    `(h)/(sqrt(2m e V))`
    C
    `(h)/(sqrt(2 me)) xx V`
    D
    `(m h)/(sqrt(2e V))`

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