Confidence votes 20.5K. All the halogens (periodic column 17) oxygen, and sulfur. Silver can also form alloys with many other metals, but these are not usually considered chemical reactions because they do not always produce compounds with constant composition. All the halogens (periodic column 17) oxygen, and sulfur.
The mucosa covering the upper surface of the tongue is thrown into numerous projections called the lingual papillae in the anterior 2/3rd of the tongue. In the posterior 1/3rd, there are no papillae, but there are lots of lymphoid follicles present. The three types of papillae are: fungiform (mushroom like)
the tongue where top side of it is covered in small protrusions called papillae. There are red patches on the surface bordered by grayish. white. The diseases cause the papillae to disappear and replace them with white grayish patches which can disappear and reappear in hours or days or change in shape or size.