The singular form of matrices is matrix.
The full rank matrices do not include zero, so they do not form a ring in the first place.
Mitochondria
mitochondria
Compounds do not form elements. Elements form compounds.
They are crystal matrices, called a lattice, if you're speaking of molecular structure. There are a lot of different types - hexagonal, or trigonal, for example. They are usually mineral compounds that form crystals. Any hippie would know this.
How is demulcent suitable in a dosage form?
Neon does not form any compounds.
All metals can form chemical compounds.
Can iron form other compounds
By chemical reactions they form other compounds.
Every type of atom can form compounds.