Rows below the main table show lanthanides (period 6) and actinides (period 7). Brackets around an atomic mass mean the most stable known isotope.
Click any element to see atomic mass, electron configuration, group, period, electronegativity, and more.
Rows below the main table show lanthanides (period 6) and actinides (period 7). Brackets around an atomic mass mean the most stable known isotope.