This chemical element is calcium (Ca).
Calcium is in group 2/IIA, so the other elements in that group would be expected to behave most like calcium.
Neither of both because it is NOT a mixture at all; it's a (pure) compound (one kind of molecules)
Calcium.
Calcium, Chlorine and Oxygen
Calcium is an element that behaves most like magnesium due to their similar chemical properties. They are both alkaline earth metals, have similar reactivity, and form similar compounds.
Hydrogen
Calcium is an element. (Ca on the periodic table).
potassium
The main constituent element of calcium is calcium itself, which is a chemical element with the symbol Ca and atomic number 20.
Calcium IS an element, whole and complete.
Calcium is an element.
Calcium hydroxide is not en element it is a compound.
Bones contain the element Calcium (Ca). It is not this element but compounds made out of this element that gives bones their strength. These compounds are calcium phosphate and calcium carbonate.
The element Hydrogen (H) has only 1 electron. When it loses it, it becomes the Ion H+.
Calcium bromide is a compound because it is composed of calcium and bromine elements that are chemically bonded together in a fixed ratio.
Calcium is an alkaline element, number 20 on your periodic table.