Question

why diamagnetic don't contain magnetic domain?​

Answer 1

The diamagnetic substances contain atoms/ molecules with completely filled shells & contain all the electrons paired. When such substances are placed in an external magnetic field, these electrons set up the induced magnetic field opposing to it (natural tendency) & thus don't allow the magnetic lines to pass through.

Answer 2

~$\small \blue {\sf{Answer }}$✨❤

The diamagnetic substances contain atoms/ molecules with completely filled shells & contain all the electrons paired. When such substances are placed in an external magnetic field,these electrons set up the induced magnetic field opposing to it (natural tendency) & thus don't allow the magnetic lines to pass through.

$\huge \orange {\mathfrak{Thank You }}$