Using the Periodic Table above that means any compound that contains an element shown in orange will contain ionic (electrovalent) bonds. Compounds that form between two non-metals (or between non-metals and metalloids) will contain covalent bonds. Using the Periodic Table above that means any compound that contains element shown in yellow or green will contain covalent bonds.
Porpoises are a group of fully aquatic marine mammals, that are sometimes referred to as mereswine, all of which are classified under the family Phocoenidae, parvorder Odontoceti (toothed whales). There are 8 extant species of porpoise.
Tortoises (/ËtÉr.tÉs.É¨z/) are a family, Testudinidae, of land-dwelling vertebrates in the order Testudines. Tortoises are shielded from predators by a shell.The top part of the shell is the carapace, the underside is the plastron, and the two are connected by the bridge.ortoises (/ËtÉr.tÉs.É¨z/) are a family, Testudinidae, of land-dwelling vertebrates in the order Testudines. Tortoises are shielded from predators by a shell.