Question

The electronic configuration of two elements A and B are 2,8,3 and 2,8,7 respectively. Find the atomic number of these elements. State the nature and formula of the compound formed by the union of these two elements.

Answer 1

The electronic configuration of  elements A IS  2,8,3

means atomic no is = 13 which is Al (Aluminium )

element B has electronic configuration 2,8,7  

means atomic no is  = 17 , which is of chlorine  .

The compound formed is Al Cl₃

nature of the compound will be covalent    .

Answer 2

Element A is Aluminum

Element B is Chlorine

The compound of the elements will be AlCl3

It acidic in nature

It is a covalent bond