An electron in the 5d orbital can be represen | vedclass

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(A) For an electron in the $5d$ orbital, the principal quantum number $n = 5$ and the azimuthal quantum number $l = 2$ (since $s=0, p=1, d=2, f=3$).Th

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$(5, 2, 1)$

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(A) For an electron in the $5d$ orbital, the principal quantum number $n = 5$ and the azimuthal quantum number $l = 2$ (since $s=0, p=1, d=2, f=3$).The magnetic quantum number $m_l$ can take any integer value from $-l$ to $+l$, which is $-2, -1, 0, 1, 2$.Both $(5, 2, 1)$ and $(5, 2, -1)$ are valid sets of quantum numbers for a $5d$ electron.However, in multiple-choice questions of this type, if multiple options are mathematically valid, we select the one provided in the set. Since both $A$ and $D$ are valid, but $D$ is often cited in standard examples, we identify the valid range.

An electron in the $5d$ orbital can be represented by the following $(n, l, m_l)$ values:

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