Ionic bonding (AQA GCSE Chemistry Combined Science): Flashcards

Metals & non-metals react, transfer electrons, form strong bonds

Positive ions formed when metal atoms lose electrons

Negative ions formed when non-metal atoms gain electrons

$Na^+$ (sodium ion, positive charge)

$Cl^-$ (chloride ion, negative charge)

$Mg^{2+}$ (magnesium ion)

$O^{2-}$ (oxide ion)

Lose 1 electron, form 1+ ions

Lose 2 electrons, form 2+ ions

Gain 1 electron, form 1- ions

Gain 2 electrons, form 2- ions

Attraction between opposite charges

Noble gas structure (full outer shell)

Atoms gain/lose/share electrons to get 8 in outer shell