Which periodic table has the elements placed in locations that match the information on the flash card? ​

It is important to wear proper protective equipment in lab even when not actively performing experiments because accidents can affect any researcher, even one not working on an experiment. select the best answer from the choices provided

What are the first three quantum numbers for the electrons located in subshell 2s?

Calculate the concentration of all species in a 0.165 m solution of h2co3.