NMR properties:

Magnetogyric Ratio NMR frequency Natural abundance (NA) Nuclear spin (I) Quadrupole moment (Q) Reference sample
40 Ca
40 Ca
20

(L. calx, lime) Though lime was prepared by the Romans in the first century under the name calx, the
metal was not discovered until 1808. After learning that Berzelius and Pontin prepared calcium amalgam
by electrolyzing lime in mercury, Davy was able to isolate the impure metal.
Sources
Calcium is a metallic element, fifth in abundance in the earth's crust, of which if forms more than 3%. It
is an essential constituent of leaves, bones, teeth, and shells. Never found in nature uncombined, it occurs
abundantly as limestone, gypsum, and fluorite. Apatite is the fluorophosphate or chlorophosphate of
calcium.