Answer
Please see the work below.
Work Step by Step
1A means group 1, alkali metals. Element name: Lithium, symbol: Li.
2A means group 2, alkaline earth metals. Element name: Beryllium, symbol: Be.
3A means group 13, Boron family. Element name: Boron, symbol: B.
4A means group 14, carbon family. Element name: Carbon, symbol: C.
5A means group 15, Nitrogen family. Element name: Nitrogen, symbol: N.
6A means group 16, chalcogens. Element name: Oxygen, symbol: O.
7A means group 17, halogens. Element name: Flourine, symbol: F.
8A means group 18, inert gases. Element name: Neon, symbol: Ne.
