Generally, any element with a lower atomic number.
The empirically atomic radius of beryllium (105 pm) is higher than the empirically atomic radius ofoxygen (60 pm).
The positive ionic radius is smaller than the neutral atomic radius
Smaller
Beryllium has a greater ionization energy than lithium. This is because beryllium has a higher nuclear charge and a smaller atomic radius, which leads to a stronger attraction between the nucleus and the valence electrons. As a result, it requires more energy to remove an electron from beryllium compared to lithium.
For the representative elements (main group elements), atomic radius generally decreases from left to right across a period. Example: B and Fl: Fl has the smaller atomic radius Li and Be: Be has the smaller atomic radius
Generally, any element with a lower atomic number.
Barium has a larger atomic radius than beryllium. This is because as you move down a group on the periodic table, the atomic radius tends to increase due to the addition of energy levels. Barium is located lower in the periodic table than beryllium, leading to a larger atomic radius.
The empirically atomic radius of beryllium (105 pm) is higher than the empirically atomic radius ofoxygen (60 pm).
the positive ionic radius is smaller than the neutral atomic radius
The positive ionic radius is smaller than the neutral atomic radius
Smaller
Boron has a larger atomic radius but a smaller atomic mass.
Phosphorus (1.23 Å) has an atomic radius smaller than that of tellurium (1.42 Å).
Yes, the atomic radius of oxygen is larger than the size of an atom. The atomic radius represents the distance from the nucleus to the outermost electron shell of an atom.
The atomic radius of oxygen is about 60 picometers. Therefore, atoms of elements such as hydrogen (25 picometers) and helium (31 picometers) have smaller atomic radii than oxygen.
Fluorine has the smallest atomic radius among fluorine, oxygen, and chlorine. Oxygen has a larger atomic radius than fluorine but smaller than chlorine. Chlorine has the largest atomic radius among the three elements.
Potassium's atomic radius is smaller than rubidium's because potassium has fewer energy levels of electrons.