Calcium

Calcium =Name of the person and year it was discoverd: Sir humphry davy in 1808.= =group number and period on the pereodic table? 20= =state of element at room temp? Solid= =the Atomic number and mass? atomic number: 20 mass: 40.078 amu= =Number of protons? Calcium has 20 protons.= =number of protons, nutrons and electrons? they are all 20= =boiling point and melting point? Boiling: 1484.0 c and melting point: 839.0c= =Facts?= = =
 * Calcium is the 5th most abundant element in the Earth's crust, present at a level of about 3% in the oceans and soil.
 * The element is essential for animal and plant nutrition. Calcium

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