Group numbers tell us that how many electrons an atom contain in its outer shell. Eg. Na11 have 1 electron in its outer shell it means Na belongs to group 1. and so on.
The characteristic of an atom that is not used to determine the number of neutrons is its atomic number. The atomic number indicates the number of protons in an atom, while the number of neutrons is derived from the difference between the atomic mass (which is the total number of protons and neutrons) and the atomic number. Therefore, only the atomic mass and the atomic number are needed to calculate the number of neutrons.
the atomic number is determined by the number of protons in a nucleus.
Number of protons or the atomic number of an atom determines what is the element.
The atomic mass gives the mass of the atom. It is one of the physical property of the atom.
Mass of an atom is determined by the no. of protons+ no. of neutrons in the atom.
Proton + Nuetron = Atomic Mass
The Atomic Number immediately tells you the number of Protons and Electrons that are in the atom. Additionally, the At. No allows you to find it quickly on the Periodic Chart where you will learn its Symbol (a key to finding its name) and its Atomic Weight. Knowing the At. Wt. you can determine the number of Neutrons that your atom has. Etc, etc, etc,
Atomic number is a characteristic property of an atom. Each element has its own unique atomic number, which is the number of protons in the nucleus of an atom.
In an atom, no. of protons = no. of electrons=atomic no. no. of neutrons=atomic mass-atomic no.
atomic number
The number of protons
The atomic number of any atom is determined by the number of protons in the nucleus of the atom.
the atomic mass
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To determine the number of protons, look at the atomic number. The number of electrons is also the atomic number.To find the number of neutrons subtract the atomic number from the Atomic Mass number.
the atomic number is determined by the number of protons in a nucleus.