1. A ➡️ Metals
2. B ➡️ Metalloids
3. C ➡️ Non-metals
4. D- Column ➡️ Group/Family
5. E- Row ➡️ Period
6. F ➡️ Halogens
7. G ➡️ Noble gases
Step-by-step explanation:
The Periodic Table is known to be an array of chemical elements that are organized in order of their increasing atomic number. That arrangement gives a recurring pattern known as the periodic law in their properties.
Periods are found in the horizontal rows (across) the periodic table, while groups are found in the vertical columns (down) the table.
The Periodic Table was discovered by D.I Mendeleev.