LIST OF ATOMIC RADIUS AND ATOMIC WEIGHTS OF ELEMENTS BASIC INFORMATION

Here is a list of atomic numbers and atomic weights.

The radius of an atom can be estimated by taking half the distance between the nucleus of two of the same atoms. For example, the distance between the nuclei of is 2.66 Å, half that distance would be the radius of atomic iodine or 1.33 Å. Using this method the atomic radius of nearly all the elements can be estimated.

Note that going across the periodic table, the atomic radius decreases. This is due to the fact that the principal energy level (principal quantum number) remains the same, but the number of electrons increase.

The increase in the number of electrons causes an increase in the electrostatic attraction which causes the radius to decrease. However, going down the periodic table the principal energy level increases and hence the atomic radius increases.

Below is a lists the atomic radii of some of the elements.

Below is a list of its atomic weights: