Question

question 1 - 19
what makes metals good conductors?
free moving electrons
full valence shell
empty valence shell
magnetic properties

Explanation:

Metals have a sea of free - moving electrons. These electrons can move freely throughout the metal lattice. When a potential difference is applied (for example, when a metal is part of an electrical circuit), these free electrons can carry electric charge, enabling the metal to conduct electricity. A full valence shell (like in noble gases) would mean no free electrons for conduction. An empty valence shell is not a common general property of metals. Magnetic properties are related to the alignment of electron spins in some metals (like iron) but are not the reason for electrical conductivity.

Answer:

free moving electrons