F321 Flashcards
(14 cards)
Mass number
The sum of the number of protons and neutrons in a nucleus of an atom
Atomic Number
The number of protons in a nucleus of an atom
Isotope
Atoms with the same number of protons but a different number of neutrons
Relative isotopic mass
The mass of one atom of an isotope relative to 1/12 the mass of Carbon-12
Relative atomic mass
The average mass of an atom relative to 1/12 the mass of Carbon-12
First ionisation energy
The energy required to remove one electron from each atom in one mole of gaseous atoms
Second ionisation energy
The energy required to remove one electron from each ion in one mole of gaseous atoms
Orbital
The volume of space that can be occupied by a maximum of two electrons
Avagadro’s Constant
The number of particles per mole of a substance - (6.02x10^23)
OILRIG
Oxidation is loss, Reduction is gain
Oxidising agent
A substance that accepts electrons
Reducing agent
A substance that donates electrons
Disproptionation
Simultaneous oxidation and reduction of the same element in a reaction
Electronegativity
The ability of an atom to attract the shared pair of electrons in a covalent bond