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. Mass number is the count of protons plus neutrons.
The question refers to Atomic Mass rather than atomic weight.
Atomic mass normally refers to the mass of a specific isotope of an element and is related to the mass number. Atomic weight ( or relative atomic mass as it is termed by IUPAC) the average mass of naturally occurring isotopes of an element.
The relationship between mass number and atomic mass is defined in terms of the Atomic mass unit which is in simple terms 1/12 of the mass of a 12C atom.
If you need to find out more about the relationship between mass number and and atomic mass you need to read the article "atomic mass unit" in wikipedia.
Iron is a meta element. Atomic mass of it is 54. Atomic number of it is 26.
The element with an atomic mass of 40.1 is calcium (Ca).
Calcium: Atomic # is 20, & the atomic mass is 40.078 amu.
The element with an atomic mass of 40.078 amu is calcium. Calcium has an atomic number of 20.
The atomic number of calcium is 20. The atomic number stands for the number of protons in an element. It is represented by the letter Z.
Calcium is a metal element. Atomic mass of it is 40.
Calcium is a metal element. Atomic mass of it is 40.
Iron is a meta element. Atomic mass of it is 54. Atomic number of it is 26.
The element with an atomic mass of 40.1 is calcium (Ca).
Calcium: Atomic # is 20, & the atomic mass is 40.078 amu.
The element with an atomic mass of 40.078 amu is calcium. Calcium has an atomic number of 20.
Calcium's atomice weight is 40.078 amu (atomic mass units).
The atomic number of calcium is 20. The atomic number stands for the number of protons in an element. It is represented by the letter Z.
Calcium-40: The atomic number of calcium is 20 and the number of neutrons is always the difference between the atomic mass and the atomic number.
Calcium: ~Atomic weight: 40.078 ~Atomic #: 20 ~Density: 1.55 ~Alkali Earth Metal
The atomic mass of an element is the average mass of an atom of that element. For a gas with an atomic mass of 20, it could be calcium (Ca). Calcium has an atomic number of 20 and an atomic mass of approximately 40.08 grams per mole.
The atomic weight of calcium is 40,078 +/- 0,004 (IUPAC, 2005).