Atomic Structure Flashcards
Relative mass, charge and location of a proton, electron and neutron
Proton: mass 1, charge +1, location nucleus Neutron: mass 1, charge 0, location nucleus Electron: mass 0, charge -1, location electron shell
Atomic number
Number of protons on the nucleus of one atom of the element
Mass number
Number of protons and neutrons in nucleus of one atom of the element
Isotopes
Have the same atomic number as the atom on the periodic table but a different mass number. Have the same number of protons but a different number of neutrons.
Relative Atomic Mass (RAM)
The average mass of an atom of an element taking into account its natural isotopes and their percentage average.
e.g.
Ions
Electrically charged particles formed when atoms lose or gain electrons from their highest energy field
Oxidation
The process of losing electrons
Reduction
The process of gaining electrons
Metals always
lose electrons to have a full outer shell
Non-metals always
GAIN electrons to have a full outer shell
Why do atoms want to have a full outer shell?
Because it makes the atoms more energetically stable