Question (2):- A. Define the following 1. Metallic character. 2. Isotopes of hydrogen 3. Ortho- and para- hydrogen 4. Write the clectronic configuration of the following clemcnts \begin{tabular}{|l|l|} \hline \multicolumn{1}{|c|}{ Symbol } & Electronic configuration \\ \hline Boron (5B) & \\ \hline Potasium (19K) & \\ \hline Magnesium (12Mg) & \\ \hline \end{tabular}