: an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines the place of the element in the periodic table see Chemical Elements Table ...
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The mass number represents the number of protons plus neutrons in the nucleus of an atom of the element. The number of protons determines the element, but the number of neutrons Pieces of gold attached to a chunk of quartz. in the atom of any one element can vary. Each variation is ...
since an atom cannot have a fractional number of protons. What is the difference between an atomic number and a mass number? The "atomic number" of an atom is equal to the number of protons it contains. The "mass number" or "atomic mass" of an atom is the sum of the number of ...
The number of protons in an atom equals the number of electrons. This is necessary to balance the charge of an atom, and to increase its stability... See full answer below.Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our exp...
The atomic numbers of some of the most famous atoms are hydrogen (1), oxygen (8), carbon (6), nitrogen (7), and gold (79) as seen in the picture. The number in parenthesis is the atomic number and also the number of protons that would be in a single atom of that element. Eleme...
Atomic number Z represents the number of protons per atom. Mass number Z + N is equal to the number of protons Z plus the number of neutrons N present in the nuclei. Mass numbers of the most abundant isotopes are given in order of decreasing abundance. For example, Cadmium Cd-48 mass ...
Chemical elements are made up of only one type of atom—gold contains only gold atoms, and neon contains only neon atoms--and they are ranked in order of their atomic number (the total number of protons in its nucleus) in a chart called the periodic table. Accordingly, because an atom ...
Lead (atomic number82) and gold (atomic number79) are defined as elements by the number of protons they possess. Nitrogen: Gaseous chemical element, chemical symbol N,atomic number7. Sentencedict.com try its best to gather and build good sentences. ...
Isotopes are two or more forms of an element. Isotopes differ from each other according to their mass number. The number written to the right of the element's name is the mass number. The mass number represents the number of protons plus neutrons in the nucleus of an atom of the element...