Frequently Asked Questions about Calcium
What is the atomic number of calcium?
Calcium has an atomic number of 20, meaning each atom contains 20 protons in its nucleus.
What is the atomic mass of calcium?
The standard atomic weight of calcium is 40.078 u (unified atomic mass units).
What category does calcium belong to?
Calcium is classified as a alkaline earth metal.
What is the state of calcium at room temperature?
Calcium is a solid at 20 °C (68 °F).
What is the melting point of calcium?
The melting point of calcium is 841.85 °C / 1115 K.
What is the boiling point of calcium?
The boiling point of calcium is 1483.85 °C / 1757 K.
What is the density of calcium?
The density of calcium is 1.55 g/cm³ (20°C).
What is the electronegativity of calcium?
Calcium has a Pauling electronegativity of 1.
What is the electron configuration of calcium?
The electron configuration of calcium is [Ar] 4s2.
What are the common oxidation states of calcium?
Calcium commonly exhibits the following oxidation states: +2.
Is calcium radioactive?
Calcium is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of calcium?
Essential for bones, teeth, muscles, and cell signaling.
What are the common uses of calcium?
Calcium is used for: Cement; Steelmaking; Biological supplements; Chemical reduction.
