He, Ne, Ar, Kr, Xe, RnVery unreactiveStable s2p6 octet*He is thought about a noble gas because it has 2 electron in a full energy level!

Atomic Radius

Atomic radius decreases native left to right within a duration because of efficient nuclear fee . As you relocate from left to appropriate in a period, you are still in the same power level which method the electron is still thesame street from the nucleus. Together you go down a group, the atomic radius increases since you are adding energy levels that room farther far from the nucleus.

Smallest to Largest:


Ionic Radius

The Noble Gases execute not have actually an ionic radius . This is becausethey don"t type ions. Ions are charged particles, and also atoms come to be charged particles when they obtain or shed electrons. Atom only get or shed electrons in an effort to create an octet, or 8 valence electrons. Octets are an especially stable electron arrangements. Noble gases already have 8 valence electron (except because that helium) and are in really stable states. They have actually no require to acquire or lose electrons, so they space "happy".

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No ion = no ionic radii.

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Ionization Energy

Ionization power increases native left to best within a period. Noble Gases have a really stable electron configuration, therefore, they have the greatest amount of ionization power within your periods. It decreases down a family because electrons farther indigenous the nucleus are simpler to remove.

Largest to Smallest:

Helium (highest ionization level in the regular table)NeonArgonKryptonXenonRadon

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Electronegativity isthe ability of an atom to obtain an electron.Every atom strives to gaineight electrons, which is the variety of atoms in the outermost power level of one atom. Due to the fact that the noble gases already haveeight electrons in their external shells, they dont wan"t to attract any type of more. Since electronegativity measures the lot of attraction between an atom and an electron, noble gases carry out not have electronegativity.

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Noble Gases are exceptionally unreactive. This is since non-metals get electrons. Because the noble gases perform not must gain any kind of electrons since of your "stable octet", they don"t react often. The many reactive non-metal would certainly be the one through the fewest electron to gain, 7A, and the one v the the smallest radius since the new electron would certainly be tightly organized by the proton in the cell nucleus (F is the mostreactive non-metal).
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