Which situation shows where the levels of potential energy and kinetic energy are balanced and equal? A stopped bicycle
A roller coaster car going uphill
A car moving at a steady speed
A runner slowing down

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

a