other govt exam FCI Assistant Grade 3 (AG III) Phase I & II Mock Test General Science Chemistry Periodic Table
The incorrect statement(s) about actinides is/are:
1
The 5f electrons of actinides are bound less tightly than the 4f electrons
2
The trans uranium elements are prepared artificially
3
All the actinides are radioactive.
4
Actinides do not exhibit actinide contraction
5
Other than those given as options