Input interpretation
actinides | period
Summary
7
Period rankings
1 | lawrencium | 7 2 | nobelium | 7 3 | mendelevium | 7 4 | fermium | 7 5 | einsteinium | 7 6 | californium | 7 7 | berkelium | 7 8 | curium | 7 9 | americium | 7 10 | plutonium | 7 11 | neptunium | 7 12 | uranium | 7 13 | protactinium | 7 14 | thorium | 7 15 | actinium | 7