The period 2 elements are the chemical elements in the second row (or period) of
the periodic ... Period 2 elements obey the octet rule in that they need eight
electrons to complete their valence sh...
Periodic Table Puzzle Name. 1 2 3 4 .5 _. 6 7 8. 9. 10 11 12. 13. 14 15 ... I have
20 neutrons and am found in your teeth 20, I am a noble gas with 2 electrons.
Helium is a noble gas with two electrons. This element is classified as a noble
gas because it tends not to form compounds with other...
In this case, this occurs because a helium atom already has a stable
configuration with two electrons in its outer energy level. The other noble gases
also have a ...
These elements were considered to be inert gases until the 1960's, because their
... All noble gases have the maximum number of electrons possible in their ...
1. I am a Noble Gas that is found in the 6<sup>th</sup> period. 2. I am a member of the
Alkaline Earth family and have 88 electrons. 3. I am a transition metal that is a
liquid at ...
Get information, facts, and pictures about Noble gases at Encyclopedia.com. ...
gas, though not among this group—usually combine to form a molecule, O2.) ... of
an element is its electron configuration, and the electrons of the noble gases are
Helium is slightly different than the other noble gas elements. It only has two
electrons in its outer shell so its valence electron configuration is 1s<sup>2</sup>. Even
though it ...
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the table above). Therefore, noble gases have eight valence electrons. ... The
only exception is helium, which has just two electrons. But helium ...
Hydrogen only needs 2 electrons to fill up its valence shell. ... The family of noble
gases includes helium, neon, argon, krypton, xenon, and radon. All the noble ...