Which diagram (see in detail) represents the structure of the metal sodium?

کون سا ڈایاگرام دھات کے سوڈیم کی ساخت کی نمائندگی کرتا ہے؟

A regular arrangement of positive ions surrounded by a sea of delocalized electrons

Randomly arranged atoms without any free electrons

Molecules held together by shared pairs of electrons

None of these

Sodium is a metal, and metallic bonding involves positive ions in a lattice surrounded by a sea of free (delocalized) electrons.

This structure gives metals properties like electrical conductivity and malleability.