X | Y |
---|---|
1: Element with atomic number 19 | A: Group 1 [IA] |
2: Element with electronic configuration 2 | B: Group 18 [0 group] |
3: Element with a valency of -2 | C: Group 16 [VI A] |
4: Element ‘P’ which loses 3 electrons to form a cation | E: Group 13 [III A] |
5: Element ‘Q’ in period-3 which has the highest electron affinity | D: Group 17 [VII A] |