Which of the substances will float in water? a) a cube with a density of 10 g/ml. b) a block with a density of 0.01 g/ml eliminate c) a sphere with a density of 2.0 g/ml d) a cylinder with a density of 6 g/ml.

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.

increased stability in the completion of fluorine's outer shell.