Calcium 20 Ca 40.078(4)   Switch element to... actinium aluminium aluminum americium antimony argon arsenic astatine barium berkelium beryllium bismuth bohrium boron bromine cadmium caesium calcium californium carbon cerium cesium chlorine chromium cobalt copper curium darmstadtium dubnium dysprosium einsteinium erbium europium fermium fluorine francium gadolinium gallium germanium gold hafnium hassium helium holmium hydrogen indium iodine iridium iron krypton lanthanum lawrencium lead lithium lutetium magnesium manganese meitnerium mendelevium mercury molybdenum neodymium neon neptunium nickel niobium nitrogen nobelium osmium oxygen palladium phosphorus platinum plutonium polonium potassium praseodymium promethium protactinium radium radon rhenium rhodium roentgenium rubidium ruthenium rutherfordium samarium scandium seaborgium selenium silicon silver sodium strontium sulfur sulphur tantalum technetium tellurium terbium thallium thorium thulium tin titanium tungsten ununbium ununhexium ununoctium ununpentium ununquadium ununtrium uranium vanadium xenon ytterbium yttrium zinc zirconium Go adjacent... Na Mg   K Ca Sc Rb Sr Y

Radiosotope data

Further data for naturally occuring isotopes of calcium are listed separately. This table gives information about some radiosotopes of calcium, their masses, their half-lives, their modes of decay, their nuclear spins, and their nuclear magnetic moments.

Isotope	Mass	Half-life	Mode of decay	Nuclear spin	Nuclear magnetic moment
41Ca	40.9622783	102000 y	EC to 41K	7/2	-1.595
45Ca	44.956186	162.7 d	β- to 45Sc	7/2	-1.327
47Ca	46.954546	4.536 d	β- to 47Sc	7/2	-1.38
49Ca	48.955673	8.72 m	β- to 49Sc	3/2
50Ca	49.95752	14 s	β- to 50Sc	0
51Ca	50.9615	10 s	β- to 51Sc; β- + n to 50Sc	3/2
52Ca	51.9651	4.6 s	β- to 52Sc

Notes

For further information about isotopes (outside WebElements) see Jonghwa Chang's (Korea Atomic Energy Research Institute) Table of the Nuclides. That package is for advanced users and is cloned at a number of sites (the most up to date version is the Korean site):

• KAERI, Korea
• Brookhaven, USA
• Rutherford Appleton Laboratory, UK
• Ruhr University Bochum, Germany

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