Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry Periodic Table
The Lanthanoid Gd exhibits an oxidation state of +3 only because:
1
Gd3+ has a small ionic size and high effective nuclear charge.
2
Gd3+ has 4f0 configuration.
3
Gd has low value of third ionisation enthalpy.
4
More than one of the above
5
None of the above