Please. A blacksmith has to put new shoes on a stable of 26 horses. Each shoe requires 3 nails. How many nails will the blacksmith need to shoe all the horses in the stable, assuming 4 shoes per horse? Use D. A.

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.

the objects have the same charge.