Atomic Bonding (Leaving Cert Engineering): Flashcards

2 $e^-$ in 1st shell, 8 $e^-$ in outer shells for stability

Strength and type of atomic bonding

Closely packed atoms, strong bonds, rigid structure

Atoms roll over each other but remain attracted

Atoms attracted but not bound, move freely with space

Atoms share electrons from outer shells

Primary bonds

Very strong, difficult to break down

Bonding via attraction of oppositely charged ions

A charged atom (positive or negative)

Secondary bonds

Addition of heat

Sea of delocalised electrons in metals

Delocalised electrons allow flow of heat/electricity