Atomic structure and isotopes Flashcards
1
Q
Atomic (proton) number
A
The number of protons in the nucleus of an atom
2
Q
Electron
A
particle found in the energy levels of an atom
relative mass = 1/2000
relative charge = -1
3
Q
Isotope
A
Atoms of the same element with different numbers of neutrons
4
Q
Mass (nucleon) number
A
The number of particles (protons and neutrons) in the nucleus
5
Q
Nucleus
A
The central part of the atom in which the nucleons (neutrons and protons) are found
6
Q
Neutron
A
particle found in the nucleus of atoms
relative mass = 1
relative charge = 0
7
Q
Proton
A
particle found in the nucleus of
atoms
relative mass = 1
relative charge = +1
