1.47     explain the malleability and electrical conductivity of a metal in terms of its structure and bonding.

Electrical current is the movement of charged particles in a particular direction.  The electrons are delocalised (free to move) around the ions and can flow when the metal is connected in a circuit, so metals conduct well.  (Because electrons are negatively charged, they move towards the positive terminal of the electricity supply.)

Metals are malleable, which means that they can be bent or hammered into different shapes without breaking.  This is because the layers of metal ions can slide over each other, but are still held together by their attraction to the sea of delocalised electrons.