20 protons in calcium
If you get too much calcium you may get calcium deposits on your bones.
1.5x10^-10
Calcium has 20 protons, 20 electrons and 20 neutrons in its most commonly found isotope.
A proton has a mass of 1 AMU (one atomic mass unit)
A proton has a mass of approximately 1.67 x 10^-27 kilograms.
an electron is much lighter than a proton or neutron.
To consider whether a particular salt will behave as an acid or an alkali, or neither, you need to consider if the ions it is made of have any tendency to be a proton acceptor or a proton donor. (Bronsted-Lowry definition of acids and bases) The calcium ion does not really. But the carbonate ion can react with water when dissolved, by accepting a proton from the water, and leaving an excess of hydroxide ion in the water, thus it will be (slightly) alkaline. However, calcium carbonate is not very soluble, so this effect will not be very great.
3 milligrams of calcium per cup. And I mean pure calcium
It has similar properties to the element with proton number 20, which is calcium.
Too much calcium makes the bones brittle.
None. Calcium is a mineral, not a vitamin.
Calcium has a large number of Neutrons.