If a ball with an original velocity of zero is dropped from a tall structure and take seven second set the ground what velocity does a ball have when it reaches the ground

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.

it would be a gas formation