It is also the fifth most abundant dissolved ion in seawater. Calcium was named after the Latin term calx meaning lime, and is a reactive silvery metallic element found in Group 2 of the periodic ...

Calcium is a metal in group IIA of the periodic table with atomic number 20, an atomic weight of 40.08, and a density of 1.55 Mg/m 3. Its melting point is 838 C, and it boils at 1440 C. The electronic ...

After the third energy level has 8 electrons, the next electron goes into the fourth level. 4th Period: Potassium and Calcium—Electrons go into the fourth energy level. A small piece of sodium metal ...

Calcium is found on the left of the periodic table, surrounded by other metals. Calcium has the usual properties of a metal. For example it is a good conductor of heat and electricity. Gethin ...

For example, calcium and phosphorus form a strong foundation ... These are almost one-quarter of the periodic table and are mainly found in the first four periods. Of these, 11 are essential ...