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For complete description of an electron ...

For complete description of an electron in an atom, the number of quantum numbers required is

A

one

B

Two

C

Three

D

Four

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • All electrons in a d-orbital must have the quantum number

    A
    `l=2`
    B
    `m=2`
    C
    `n=3`
    D
    `n=4`

  • The sinle quantum number by Neil.s Bohr and the appearance of several spectral lines in a particular series of Hspectrum, suggest that there more than one quantum to explain all the quantized properties of an electron in a particular energy level inside the atom. If fact when the properties of the electron is transformed from Cartesian co-ordinate to polar co-ordinates then it becomes the function of r, theta and phi suggesting three independet quantum numbers. In addition to this a fourth quantum number is required to consider the spinning behaviour of an electron. The principal quantum number n suggest the orbit number in which electron revolves, Azimuthal quantum number 1 suggest the shape of orbitals, magnetic quantum number m, gives orientation of orbital in presence of external magnetic field, while spin quantum number s, gives direction of an electron about its own axis n != 0 values of "1" ranges in between 0 to (n-1), while m depends upon 1. Total number values of m = 21+1, and "m" ranges in between -1 to +1 including 0. For each electron spin will be +-(1)/(2) The two unpaired electron present in C-atom are different w.r.t their

    A
    n
    B
    l
    C
    m
    D
    s

  • The sinle quantum number by Neil.s Bohr and the appearance of several spectral lines in a particular series of Hspectrum, suggest that there more than one quantum to explain all the quantized properties of an electron in a particular energy level inside the atom. If fact when the properties of the electron is transformed from Cartesian co-ordinate to polar co-ordinates then it becomes the function of r, theta and phi suggesting three independet quantum numbers. In addition to this a fourth quantum number is required to consider the spinning behaviour of an electron. The principal quantum number n suggest the orbit number in which electron revolves, Azimuthal quantum number 1 suggest the shape of orbitals, magnetic quantum number m, gives orientation of orbital in presence of external magnetic field, while spin quantum number s, gives direction of an electron about its own axis n != 0 values of "1" ranges in between 0 to (n-1), while m depends upon 1. Total number values of m = 21+1, and "m" ranges in between -1 to +1 including 0. For each electron spin will be +-(1)/(2) d-orbital may contain maximum of 10 electron as for d-orbital

    A
    l=2
    B
    total value of m=5
    C
    Both a and b
    D
    None

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    The number of electrons in M shell is equal to the number of electrons in L shell for an element. Write the name, electronic configuration of that element and also write the values of four quantum numbers for the last electron.

    The electronic configuration of an atom is as follows 1s^(2) 2s^(2) 2p^(2) a) Which element's atom is it ? b) What is the valence shell ? c) When excited what could be the number of lone / single electrons in this atom ? d) What is the value of principal quantum numbers of two electrons in the first box ?

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    The correct set of quantum numbers for 4d electrons is

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