The nodes for a 3s atomic orbital are A) two points near the nucleus and another point at an infinite distance from the nucleus. B) three spherical solids. C) one plane and two spheres. D) two concentric circles. E) two concentric spheres.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.