carry deoxygenated blood to the heart [except pulmonary veins]; veins, with the exception of the pulmonary vein, carry blood that has been used by body tissues, back to the heart; veins carry blood and waste products to the heart where these will be processed through the lungs and given oxygen again.rtery Structure. arteries have three layers: a smooth inner layer; a strong, muscular layer; and a thin outer layer; connective fibers in artery walls allow for the elasticity needed for the artery to function; arteries are usually larger than veins.
Asker's rating. 1  Cl- has the smallest radius due to the fact that atoms' radii get smaller as you go up and to the right in the periodic table. 2  F- has the smallest radius. 3  Sice flourine is in the lowest energy level so it has the lowest radius. 4  fluorine.
The atomic radius of Br is smaller than the ionic radius of Br- The atomic radius of Br is the smallest of the atoms in the fourth period besides Kypton. The radius of the electron density shell remains the same but the number of protons creating a pull increases. The ionic radius of Br- is larger than the atomic radius of Br because there is one more electron but no more protons. For additional help: Atomic radius starts at 6:00 and and ionic radius at 7:12.