Is atomic radius similar to atomic size?

Answer 1

Radius, diameter, and volume are related... given any one of the three you can calculate the other two... but while it's not unthinkable to specify the size of an atom in units of volume, it's almost universally given in units of length instead as either a radius or diameter, with radius being somewhat more likely.

Answer 2

Atomic radius, is called the width of an atom, but it is not a precisely defined physical quantity, nor is it constant in all circumstances. The value assigned to the radius of a particular atom always depends on the definition chosen for "atomic radius," and the appropriate definition depends on the context. The term "atomic radius" itself is problematic: it may be restricted to the size of free atoms, or it may be used as a general term for the different measures of the size of atoms, both bound in molecules and free. In the latter case it should also include ionic radius, as the distinction between covalent and ionic bonding is itself somewhat arbitrary. The atomic radius is determined entirely by the electrons: The size of the atomic nucleus is measured in femtometres, 10,000 times smaller than the cloud of electrons. Electrons, however, do not have definite positions-although they are more likely to be in certain regions than others-and the electron cloud does not have sharp edges. Despite (or maybe because of) these difficulties, many different attempts have been made to quantify the size of atoms (and ions), based both on experimental measurements and calculation methods. It is undeniable that atoms do behave as if they were spheres with a radius of 30-300 pm, that atomic size varies in a predictable and explicable manner across the Periodic Table and that this variation has important consequences for the chemistry of the elements. Atomic radii decreases from Alkali Earth metals to the Noble Gases on the far right side of the periodic table. This is determined by the effective nuclear charge that increases with added electrons in a period. The atomic radii increases as you go down each column with added electrons in a period.

Answer 3

No, atomic size is not the same as Atomic Mass. Atomic size is the distance that the valance electron shell is from the nucleus, which is not directly associated with atomic mass.

Atomic mass is the measurement of the number of protons and neutrons in an element. When displayed on a table of elements, as long as it is a good table of elements, that is, the "atomic mass" will be given as the weighted average of the isotopes of that element. The weighting of the averaging is based on the commonality of the isotopes.

Answer 4

No; Size is a different measurement than mass; The mass is the atomic mass, and the size is the number of protons (I think that is what you meant?) You can find this information in the periodic table of elements.