6. The electronic configuration of some elements is given below. With the help of such electronic configurations, answer the following questions: A = 1s², 2s², 2p6, 3s¹ B = 1s², 2s², 2p6, 3s², 3p6, 4s¹ D = 1s², 2s², 2p6, 3s², 3p5 C = 1s², 2s², 2p5 i. Write the valency, period number, group number and block of the elements given above. ii. Name the chemical compound and molecular formula formed between A with D and B with C. iii. Which element is more reactive between A or B? iv. Which element is more reactive, C or D?​