If you know what chemical group an element is in, what can you predict about its electron arrangement?

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

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false