Name the following acid: H2SO4

Name the element in group 17, period 2. (periodic table)

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

How can the periodic table be used to predict the behavior of elements?