JEE Main2004Chemistryd and f Block ElementsActual
Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?
Options
- A(n-1) d^8 n s^2
- B(n-1) d^5 n s^2
- C(n-1) d^3 n s^2
- D(n-1) d^5 ~ns ⁻¹
Correct answer
B. (n-1) d^5 n s^2
Step-by-step solution
Maximum oxidation state exhibited by d block elements (O.S) = no. of n s electrons + no. of (n-1) d electrons. (a) O.S. =2+2=4 (b) O.S. =5+1=6 (c) O.S. =3+2=5 (d) O.S. =5+2=7 (n-1) d^5 n s^2 configuration will achieve the highest oxidation state.