The unpaired electrons in $Al$ and $Si$ are present in the $3p$ orbital. Which electrons will experience a higher effective nuclear charge from the nucleus?

(B) The electrons of $Si$ experience a higher effective nuclear charge.
Electronic configuration of $Al$ $(Z=13)$: $[Ne] 3s^{2} 3p^{1}$
Electronic configuration of $Si$ $(Z=14)$: $[Ne] 3s^{2} 3p^{2}$
Both elements have their valence electrons in the same shell $(n=3)$ and the same subshell $(3p)$.
However,the atomic number $(Z)$ of $Si$ $(14)$ is greater than that of $Al$ $(13)$.
As the number of protons increases,the nuclear charge increases,leading to a greater effective nuclear charge $(Z_{eff})$ experienced by the valence electrons in $Si$ compared to $Al$.