Which element would most likely have a positive electron affinity

What’s the scientific notation for the number 6,840,000,000

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.

What are the major types of a chemical compound