Question

The atomic number of two atoms ‘X’ and ‘Y’ are 14 and 8 respectively. State:

1. the period to which ‘X’ belongs.
2. the formula of the compound formed between ‘X’ and ‘Y’.
   (Do not identify X and Y)

Answer 1

Electronic configuration of X = 2, 8, 4 and electronic configuration of Y = 2, 6

1. Since there are three shells in X, it belongs to the third period.
2. The formula of the compound formed between X and Y is XY₂.