Question

Looking at the elements 10 and 11 on the periodic table, what can you tell me about the size of the atom as you go from 10 to 11?(1 point)

Answer 1

As you move from element 10 (neon) to element 11 (sodium) on the periodic table, the atomic size increases. This is because sodium has an additional electron shell compared to neon. Although both elements are in the same period (the third period), sodium's increasing positive charge in the nucleus (due to more protons) leads to stronger attraction between the nucleus and the outer electrons, but the addition of a new shell outweighs this effect, resulting in a larger atomic radius for sodium.