Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry Periodic Table
The correct 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
More than one of the above
5
None of the above