TS EAMCET 11-Sep-2020 Shift 1 Solved Paper

Iso-electronic species Atoms, molecules and ions that have the same electronic configuration are said to be iso-electronic. So,
Number of electrons

(a) N3−	=10
F−	=10
O2	=16
Ca2+	=10

Number of electrons

(b) Ca2+	=10
Cl−	=18
Al3+	=10
O2−	=17

Number of electrons

(c) N3−	=10
Mg2+	=10
F−	=10
O2−	=17

Number of electrons

(c) Mg2+	=10
O2−	=17
Cl−	=10
N3−	=22