He, Ne, Ar, Kr, Xe, RnVery unreactiveStable s2p6 octet*He is considered a noble gas since it has actually 2 electrons in a full power level!
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Atomic Radius

Atomic radius decreases from left to ideal within a period because of efficient nuclear fee . Together you relocate from left to right in a period, you are still in the same energy level which means the electron is quiet thesame street from the nucleus. Together you go down a group, the atom radius increases because you are adding energy levels that are farther far from the nucleus.

Smallest come Largest:

HeliumNeonArgonKryptonXenonRadon
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Ionic Radius

The Noble Gases execute not have actually an ionic radius . This is becausethey don"t type ions. Ions room charged particles, and atoms become charged particles once they obtain or shed electrons. Atoms only get or shed electrons in an effort to develop an octet, or 8 valence electrons. Octets are specifically stable electron arrangements. Noble gases already have 8 valence electron (except because that helium) and are in an extremely stable states. They have actually no need to gain or lose electrons, for this reason they room "happy".

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No ions = no ionic radii.


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Ionization Energy

Ionization energy increases native left to appropriate within a period. Noble Gases have actually a really stable electron configuration, therefore, they have actually the greatest amount the ionization power within their periods. The decreases down a family due to the fact that electrons farther native the nucleus are simpler to remove.

Largest come Smallest:

Helium (highest ionization level in the periodic table)NeonArgonKryptonXenonRadon
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Electronegativity
Electronegativity isthe capability of an atom to acquire an electron.Every atom strives come gaineight electrons, which is the variety of atoms in the outermost energy level of one atom. Due to the fact that the noble gases already haveeight electron in their external shells, they not wan"t to attract any more. Due to the fact that electronegativity actions the quantity of attraction between an atom and also an electron, noble gases perform not have actually electronegativity.

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Reactivity
Noble Gases are extremely unreactive. This is due to the fact that non-metals get electrons. Due to the fact that the noble gases perform not must gain any kind of electrons due to the fact that of your "stable octet", ptcouncil.netle don"t react often. The most reactive non-metal would be the one through the fewest electrons to gain, 7A, and the one v the smallest radius since the brand-new electron would be tightly held by the protons in the cell core (F is the mostreactive non-metal).
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The End