Answer:
The atomic radius of sodium (Na) is larger than the atomic radius of phosphorus (P). This means that the atoms of sodium are larger in size than the atoms of phosphorus.
In terms of metallic properties, sodium is a metal while phosphorus is a nonmetal. Metals typically have a shiny appearance, high thermal and electrical conductivity, and are typically malleable and ductile. Nonmetals are typically dull, poor conductors of heat and electricity, and are typically not malleable or ductile.
Sodium is a highly reactive metal and is usually found in nature as a compound rather than a pure element. It has a low melting point and boiling point, and is a good conductor of heat and electricity. Phosphorus is a nonmetal that can exist in different allotropic forms, white phosphorus is highly reactive, and red phosphorus is less reactive. It has a low melting and boiling point and is a poor conductor of heat and electricity.
In summary, the atomic radius of sodium is larger than that of phosphorus and sodium is a metal while phosphorus is a nonmetal. Sodium has properties of high reactivity, low melting point and boiling point and good conductivity of heat and electricity while Phosphorus has properties of low reactivity, low melting and boiling point and poor conductivity of heat and electricity.