An atom gains two electrons, this is the new electron configuration: 1s22s22p63s23p5 What is the element symbol of this negatively charged atom?

Two things that biomedical has invented or innovated

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml

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.