Which of the following statement(s) is (are) | vedclass

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(D) : The electronic configuration of $Cr$ $(Z=24)$ is $[Ar] \ 3d^5 4s^1$ due to the extra stability of half-filled $d$-orbitals. This is correct.$B$:

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All of the above

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(D) : The electronic configuration of $Cr$ $(Z=24)$ is $[Ar] \ 3d^5 4s^1$ due to the extra stability of half-filled $d$-orbitals. This is correct.$B$: The magnetic quantum number $(m_l)$ ranges from $-l$ to $+l$,including zero,so it can have negative values. This is correct.$C$: For $Ag$ $(Z=47)$,the configuration is $[Kr] \ 4d^{10} 5s^1$. The $4d^{10}$ subshell has $5$ pairs of electrons (total $10$ electrons,$5$ spin up,$5$ spin down). The $5s^1$ has $1$ electron. In the filled inner shells ($[Kr]$ has $36$ electrons,$18$ up,$18$ down),we have $18$ up and $18$ down. Adding the $4d^{10}$ ($5$ up,$5$ down) and $5s^1$ ($1$ up),we get $18+5+1 = 24$ electrons of one spin and $18+5 = 23$ of the opposite spin. This is correct.Therefore,all statements are correct.

Which of the following statement$(s)$ is (are) correct?

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