An element ‘X’ is placed in the 3rd period of the modern periodic table

An element ‘X’ is placed in the 3rd period of the modern periodic table. Answer the following questions stating reason for your answer in each case:

  1. Write the electronic configuration of the element ‘X’.
  2. Write the formula of the compound formed when the element ‘X’ reacts with another element ‘Y’ of atomic number 17.
  3. Will the oxide of this element be acidic or basic?
  1. X (13) : 2, 8, 3
  2. Since, Y has atomic number 17. So, its valency is 1. Hence, formula of the compound is XY3.
  3. Its oxide is basic.