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12 questions
the smallest unit of an element that has all the chemical properties of that element
a unit of mass that is equal to one twelfth the mass of a Carbon-12 atom.
the number of protons in the nucleus of an atom
the weighted average of the atomic mass of each isotope of the element, in proportion to the percentage of each isotope of the element occurring in nature
a negatively charged subatomic particle that exists in various energy levels outside the nucleus of an atom
an atom of the same element with the same number of protons but a different number of neutron
the total number of neutrons and protons in an atom
a charge of the same sign as that of an electron
a subatomic particle with no electric charge that is located within the nucleus of the atom
a charge of the same sign as that of a proton, often due to a deficit of electrons
a subatomic particle with a positive charge that is located in the nucleus of an atom
relating to something having dimensions (size) smaller than that of an atom itself
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