Final answer:
This question is about atomic radius, ionization energy, and electronegativity.
Step-by-step explanation:
The subject of this question is Chemistry. More specifically, it is asking about atomic radius, ionization energy, and electronegativity, which are all concepts related to the behavior and properties of atoms.
The atomic radius refers to the size of an atom, specifically the distance between the nucleus and the outermost electron cloud. It can be measured in picometers (pm) or angstroms (Å).
The ionization energy is the energy needed for a neutral atom to remove an electron. It is a measure of how tightly an electron is bound to the atom. Higher ionization energy indicates a stronger bond.
Electronegativity is the ability of an atom to attract and bind with electrons. It is a measure of the atom's tendency to gain electrons and form negative ions, also known as anion formation.
Learn more about Atomic properties