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

Atomic Radius

Atomic radius decreases native left to best within a duration because of effective nuclear charge . Together you move from left to best in a period, you room still in the same power level which way the electron is tho thesame distance from the nucleus. Together you go under a group, the atomic radius increases because you are including energy levels that are farther far from the nucleus.

Smallest come Largest:


Ionic Radius

The Noble Gases do not have actually an ionic radius . This is becausethey don"t form ions. Ions room charged particles, and also atoms become charged particles as soon as they gain or lose electrons. Atom only acquire or lose 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 get or lose electrons, so they space "happy".

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No ions = no ionic radii.

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Ionization Energy

Ionization power increases indigenous left to best within a period. Noble Gases have actually a an extremely stable electron configuration, therefore, they have the highest possible amount that ionization energy within their periods. That decreases down a family due to the fact that electrons farther from the nucleus are easier to remove.

Largest to Smallest:

Helium (highest ionization level in the regular table)NeonArgonKryptonXenonRadon

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Electronegativity isthe capacity of one atom to get an electron.Every atom strives come gaineight electrons, i beg your pardon is the number of atoms in the outermost energy level of an atom. Since the noble gases currently haveeight electrons in their external shells, they not wan"t to attract any kind of more. Due to the fact that electronegativity procedures the quantity of attraction between an atom and also an electron, noble gases perform not have electronegativity.

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Noble Gases are incredibly unreactive. This is since non-metals acquire electrons. Due to the fact that the noble gases perform not need to gain any kind of electrons since of your "stable octet", they don"t react often. The most reactive non-metal would be the one with the fewest electrons to gain, 7A, and also the one v the smallest radius due to the fact that the new electron would be tightly held by the proton in the nucleus (F is the mostreactive non-metal).
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The End