Isotopes are atoms with a different number of neutrons than protons and electrons. The word isotope comes from the Greek words "isos" meaning equal and "topos" meaning place. Isotope means "same place".
An atom that has more neutrons than protons is called an Isotope.
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The mass number of an atom is the sum of its protons and neutrons. It represents the total number of nuclear particles (protons and neutrons) in the atom's nucleus. The number of protons in an atom determines its element, while the number of neutrons can vary to create different isotopes of the element.
Number of proton = atom numberfor example:Hydrogen has 1 proton and its atom number is also 1Number of neutrons + number of protons = mass numberfor example:Hydrogen have 1 proton and and NO neutrons, so the mass number is 1Helium has 2 protons and and 2 neutrons, so the mass number is 4
The number protons in an atom is called the atomic number (it is this number that tells us which element the atom is). The number of neutrons in an atom can change, but the term for the amount of neutrons is called an isotope. The number of protons and neutrons added together is called the atomic mass.
an isotope is defined by an atom with the same number of protons, but a different number of neutrons
The mass number in chemistry represents the total number of protons and neutrons in an atom's nucleus. It is used to identify isotopes of an element, where different isotopes have the same number of protons but a different number of neutrons.
Mass number!:)
The mass number is the sum of protons + neutrons.
protons and neutrons in an atom. It is the sum of protons and neutrons in the nucleus of an atom.
isotope
an isotope.