Which expression or expressions for quantum numbers are used for the following elec...
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Step-by-step solution
The notation $2p_x$ represents an electronic orbital. The '2' is the principal quantum number ($n=2$). The 'p' denotes the azimuthal quantum number ($l=1$ for p orbitals). The subscript 'x' indicates the orientation of the orbital along the x-axis, which corresponds to the magnetic quantum number ($m_l=1$ for $p_x$).
Answer
2=n, p=l, x=ml