Question

the electrons in the atoms of four elements a, b, c and d are distributed in three cells having 1, 3, 5 and 7 electrons respectively in their outermost write the group number in which these elements are there in the modern periodic table write the electronic configuration of the atom of b and D and the molecular formula of the compound formed when B and D combined​

Answer 1

Answer:

Group number: A - 1st, B - 13th, C - 15th, D - 17th

➡️ B = 2, 8, 3

➡️ D = 2, 8, 7

➡️ Molecular Formula: BD3