[DOC] [TLE] Atomic Structure - Chemistry [PAR] These particles have the following properties: Particle. Charge. Mass (g). Mass (
amu). Proton. +1. 1.6727 x 10-24 g. 1.007316. Neutron. 0 ... of atoms. It is defined 
so that both protons and neutrons have a mass of approximately 1 amu. ... The 
number of protons in the nucleus determines the identity of the atom. For 
example... [DOC] [TLE] What is equal to the number of protons in an atom? | Reference.com [PAR] Each atom contains an equal number of protons and electrons; these particles 
will be ... For example, the element gold, or AU, has an atomic number of 79, 
meaning it ... atom's total number of neutrons is equal to the rounded atomic 
mass minus ... and Neutrons Are These  The Number of Protons in the Nucleus 
of an Atom... [DOC] [TLE] Atomic Number and Mass Number - NDE/NDT Resource Center [PAR] Define and determine the mass number of an atom. What is an atom's atomic 
number? The number of protons in the nucleus of an atom determines an 
element's... [DOC] [TLE] Questions and Answers - How do I find the number of protons ... [PAR] To find the number of protons, electrons and neutrons in an atom, just follow 
these easy steps: ... By definition, atoms have no overall electrical charge. ... The 
mass number is a count of the number of particles in an atom's nucleus. ... These 
different versions are called isotopes and most elements are actually a mixture of
... [DOC] [TLE] Overview of Atomic Structure - Boundless [PAR] Atoms are made up of particles called protons, neutrons, and electrons, which ... 
10-24 grams, which scientists define as one atomic mass unit (amu) or one 
Dalton. ... part of the nucleus of an atom and determining the atomic number of an 
element. ... In these atoms, the positive and negative charges cancel each other 
out,... [DOC] [TLE] Structure of the Atom (grades 6-8) - NYU [PAR] Atoms are composed of three type of particles: protons, neutrons, and electron. 
Protons and neutrons are responsible for most of the atomic mass e.g in a 150 ... 
Electrons reside in orbitals around the nucleus. ... The same element may contain 
varying numbers of neutrons; these forms of an element are called isotopes. [DOC] [TLE] Atomic nucleus - Wikipedia [PAR] The nucleus is the small, dense region consisting of protons and neutrons at the 
center of an ... These dimensions are much smaller than the diameter of the atom 
itself (nucleus .... where A = Atomic mass number (the number of protons Z, plus 
the number of ... An even number of particles is more stable than an odd number. [DOC] [TLE] Atomic number - Wikipedia [PAR] In chemistry and physics, the atomic number of a chemical element is the number 
of protons found in the nucleus of an atom of that element, and therefore... [DOC] [TLE] What Are The Parts Of An Atom? - Universe Today [PAR] Apr 7, 2016 ... All three of these subatomic particles are Fermions, a class of particle ... The total 
number of protons and neutrons in an atoms' nucleus ... Because of the definition 
of the unified atomic mass unit, each carbon-12 atom has an... [DOC] [TLE] Chem4Kids.com: Atoms: Neutrons [PAR] Different numbers of neutrons in the nucleus can create isotopes Neutrons are 
the particles in an atom that have a neutral charge. They aren't ... and 6 neutrons. 
The number of carbon isotopes doesn't change the atomic mass very much. [DOC] [TLE] Nuclide, Atomic Number, mass number - Chemistry LibreTexts [PAR] Jul 18, 2014 ... An atom is the smallest unit of an element that can exist. ... These particles define 
a nuclide and its chemical properties and were discovered ... the number of 
protons in the nucleus, and a mass number (A), the total number of... [DOC] [TLE] The Atom - Chemistry LibreTexts [PAR] Jul 15, 2015 ... Most of an atom's mass is in its nucleus; the mass of an electron is

Question: Mass number is defined as the number of neutrons & these particles in an atom's nucleus
Answer: Protons