Someone, please help asap! No links or weird answer pls :( This is the question: Bohr models of 4 different elements are shown below. Which 2 atoms are elements of the same group?

Please also explain why that is the answer so I can understand, thanks.

How many orbitals does the p sub shell container

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.