An atom of mercury contains 120 neutrons in its nucleus and 80 electrons around it. It contains protons in its nucleus
and its atomic number is

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Building glycogen from glucose molecules is an example of