<span>In the cytoplasm, ribsomal RNA (rRNA), a type of RNA, and
protein combine to form a nucleoprotein called a ribosome. The ribosome
serves as the site and carries the enzymes necessary for protein
synthesis. They are often takes the shape of small round particles
attached in the endoplasmic reticulum. The ribosome attaches itself to m-RNA
and provides the stabilizing structure to hold all substances in position as
the protein is synthesized. Several ribosomes may be attached to a single RNA
at any time. <span> </span></span>
Answer:metals and non metals
Example
Ca and Cl form the ionic compound calcium chloride (CaCl2)
