Right now either www.windows-movie-maker.org or windows-movie-maker.org is failing to resolve properly or returns a 404 error. You should set a preferred domain in Google Search Console and use a 301 redirect to divert traffic from your secondary domain.
A network solid or covalent network solid is a chemical compound (or element) in which the atoms are bonded by covalent bonds in a continuous network extending throughout the material.
Covalent bonding. There are different types of bonding, including: Ionic bonding between metals and non-metals; Covalent bonding between non-metals; A covalent bond is a shared pair of electrons, shared between two non-metal atoms. Simple molecules. Simple molecules consist of a small number of atoms joined by covalent bonds. For example, water and carbon dioxide exist as simple molecules. Their molecules are often shown using the models in the table below.