# Atomic number and mass number of calcium

##### 2019-11-20 20:30

Calcium has atomic number of 20, an atomic weight of 40. 078 and an mass numbers of 40 48 inclusive in its isotopes. Atomic number is the count of protons in the nucleus. Mas s number is the count of protons plus neutrons.The number of neutrons can vary, but the number of protons must always be equal to 20 for a calcium isotope. Therefore, the mass number of this calcium isotope will be mass number A 20 protons 20 neutrons 40 You are dealing with the calcium40 isotope, 2040 Ca . atomic number and mass number of calcium

Calcium is a chemical element with symbol Ca and atomic number 20. An alkaline earth metal, calcium is a reactive silvery metal that forms a dark oxidenitride layer when exposed to air. Calcium has atomic number of 20, an atomic weight of 40. 078 and an mass numbers of 40 48 inclusive in its isotopes. Atomic number is the count of protons in the nucleus. For example, the mass number of argon atoms and calcium atoms can both be 40. Calculating numbers of subatomic particles The symbol for an atom can be written to show its mass numberatomic number and mass number of calcium Calcium Element in Periodic Table Atomic Number Atomic Mass. 297 reads; Calcium Element: Calcium is an element in the second group and third period of periodic table. Its atomic number is 20 and symbol is Ca. Ca is a soft, silverywhite alkaline earth metal.

## Atomic number and mass number of calcium free

Jan 21, 2010 Best Answer: mass number 42 atomic number 20 for Ca number of protons number of electrons when Ca forms Ca2 2 electrons are lost so number of electrons 18 number of protons 20 number of neutrons For an atom the atomic number is equal to number of electrons which is equal to number of atomic number and mass number of calcium The atomic number would remain 29, the mass number would increase to 66, and the atom would be a cation with a 2 charge. 2. The atomic number would be reduced to 27, the mass number would remain 64, and the atom would be an anion with a 2 charge. How are atomic and mass number denoted in the chemical symbol of the isotope of an element? Express the shortened notation for an isotope of element X with atomic number 92 and atomic mass 238. X is th symbol of the element. 238 is the atomic mass. 92 is the atomic number. Atomic Number Atomic Mass Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure. Element Groups: Alkali Metals Information about calcium carbonate. Healthworld Online Calcium; Contains an Introduction to Tungsten , among other things. Calcium carbide (CaC 2) Calcium chloride (CaCl 2) Calcium phosphide (Ca 3 P 2) Interesting facts: It is the 5th most abundant element found in the earth's crust. It was prepared as lime by the Romans who called it calyx, but it wasn't discovered until 1808. It is not found free in nature. It can be purified is not a soft silverywhite metal.

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