Final answer:
Without the group and period numbers, it's not possible to identify the element on the Periodic Table from the given options (H, He, Li, Be).
Step-by-step explanation:
To find the element on the Periodic Table (PT) using the group and period numbers, we need to know these numbers. However, they are not provided in the question, making it impossible to answer without more information. Generally, each element has a distinct position corresponding to its period (horizontal row) and group (vertical column). For example, Hydrogen (H) is in period 1, group 1; Helium (He) in period 1, group 18; Lithium (Li) in period 2, group 1; and Beryllium (Be) in period 2, group 2. If we were given a specific group and period number, we could locate the corresponding element accordingly based on its position on the periodic table.