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An electron is in 4f orbital. What possi...

An electron is in 4f orbital. What possible values for quantum numbers, n,l,m and s can it have ?

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Since the electron is in a 4f orbital, the value of the principle quantum number, n = 4
For the f-orbital, the secondary quantum number, l = 3
The values of the magnetic quantum (m) are `-l " to " +l` including zero. Therefore, when l = 3, m has seven values, i.e., `-3, -2, -1, 0, +1, +2, and 3`
For each value of m, the spin quantum number, s has two values, i.e., `s = +1//2 and s = -1//2`
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Knowledge Check

  • The total number of orbitals possible for the quantum number n is

    A
    n
    B
    `n^(2)`
    C
    2n
    D
    `2n^(2)`

  • the highest probability of finding the electron in an orbital having values of quantum hnumbers n=3 l=1 and m=1.

    A
    in between any two axis out of three
    B
    On any two axis simultaneously ,perpendicular to each other
    C
    On any one axis out of the three at a time
    D
    on all the three axis simultaneously at a time

  • Assertion : The maximum number of electrons in the shell with principle quantum number n is equal to 2n^(2) . Reason : Two electrons can have the same value of three quantum numbers n, l and m_(l) , but must have the opposite spin quantum number.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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    The position and energy of an electron is specified with the help of four quantum numbers namely, principal quantum number (n), azimuthal quantum number (l), magnetic quantum number (m_l) and spin quantum number (m_s) . The permissible values of these are : n = 1,2..... l = 0,1,.....(n-1) m_l = -l,......0,......+l m_s = +1/2 and -1/2 for each value of m_l . The angular momentum of electron is given as sqrt(l(l + 1)) cdot h/(2pi) While spin angular momentum is given as sqrt(s(s+1)) cdot (h/(2pi)) where s = 1/2 The electrons having the same value of n, l and m_l are said to belong to the same orbital. According to Pauli's exclusion principle, an orbital can have maximum of two electrons and these two must have opposite spin. Which of the following statements is not correct ?

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