The number of unpaired electrons in an atom with atomic number $29$ is .....

  • A
    $1$
  • B
    $3$
  • C
    $4$
  • D
    $2$

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"No two electrons in an atom can have the same set of all four quantum numbers." This principle is called:

What is the maximum number of electrons which can be accommodated in an atom in which the highest principal quantum number value is $4$?

The radial part of the wave function is determined by which quantum numbers?

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$Fe$ (atomic number $= 26$) atom has the electronic arrangement:

List the quantum numbers ($l$ and $m_{l}$) for an electron in a $3d$ orbital.

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