Why do amorphous solids not have a long-range order in the arrangement of their particles?
their formation involves very rapid cooling.
they do not have enough particles.
their particles eventually change positions.
their particles always stay in the same positions.

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)