For an average atom, the radius lies around 10 nm and the nucleus around 1 pm.
From the given elements, Mg has the largest atomic radius, hence the size.
Hydrogen atoms are the smallest known elements, and therefore smaller than oxygen atoms (according to atomic weight and atomic mass).
The atomic radius depends on the the number of electron shells, total negative charge, positive charge of the nucleus, atomic mass.
The size of an isolated atom cannot be determined simply because scientists can't locate electrons outside of the nucleus. In addition to this, the size can be estimated by taking half the distance of adjacent atoms (in a solid)
IIRC Atoms (contains Protons/Neutrons and electrons) Nucleus contains Protons and Nuetrons Proton atomic size 1 Nuetron atomic size 1 electron atomic size 1/1836 i.e the proton is 1836 bigger than the electron
From the given elements, Mg has the largest atomic radius, hence the size.
atomic number increases
Atomic Radius means the size of the atoms, the distance from the atomic nucleus to the outermost electron orbital.
The atomic radii is the measure of the size of the atoms in a chemical element. This is the distance from the nucleus to the boundary of the electrons' cloud.
From the given elements, potassium has the largest atomic radius.
no.
Hydrogen atoms are the smallest known elements, and therefore smaller than oxygen atoms (according to atomic weight and atomic mass).
The atomic radius depends on the the number of electron shells, total negative charge, positive charge of the nucleus, atomic mass.
The atomic radius decrease from left to right in the periodic table.
The Smaller Atoms [H to Ca] are in the [single] Angstrom range.
The atomic radius, is the measured size of the atoms of a chemical element. Usually this is the typical distance between the nucleus and the boundary of the surrounding electrons.
Atomic radii have not been measured or calculated based on theoretical principles for all of the elements. However, based on the information available in the wikipedia tables of atomic radii it would appear that the largest atom will prove to be that of francium.