Complete the following table: (4.4, 4.5)
$$
\begin{array}{|l|l|l|l|l|}
\hline \begin{array}{l}
\text { Name } \\
\text { of the } \\
\text { Element }
\end{array} & \begin{array}{l}
\text { Atomic } \\
\text { Symbol }
\end{array} & \begin{array}{l}
\text { Number } \\
\text { of } \\
\text { Protons }
\end{array} & \begin{array}{l}
\text { Number } \\
\text { of } \\
\text { Neutrons }
\end{array} & \begin{array}{l}
\text { Number } \\
\text { of } \\
\text { Electrons }
\end{array} \\
\hline \text { Potassium } & & & 22 & \\
\hline & { }_{23}^{51} \mathrm{~V} & & & \\
\hline & & 48 & 64 & \\
\hline \text { Barium } & & & 82 & \\
\hline
\end{array}
$$