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Polyatomic ions are atoms held together by covalent bonds as a group and that from CHM 1220 at Wayne State University
The type of chemical bonds that hold the parts of each nucleotide  together is a hydrogen bond. It connects each nitrogenous base of  nucleotide in DNA and RNA.ovalent bonding holds CuCl2 together. Covalent bonding is a shared electron pairing of electrons from a non-metal and a metal. For the sake of your chemistry professor's sani â¦ ty please memorize the metals and nonmetals on the periodic table. In fact just memeorize the periodic table.