<p>Carbon 13 has one extra 'neutron' / proton-electron pair and is a stable isotope of Carbon with a&nbsp;natural abundance of about 1 %.</p>

<p>5730 years half-life</p>

<p>Neon 21 is stable and has two&nbsp;extra 'neutrons'</p>

<p>Neon 21 is stable and has one extra 'neutron'</p>

<p><span style="color:#000000">impossible,</span></p>

<p><span style="color:#000000"></span></p>

<p><span style="color:#000000">meant for depicting all nuclets</span></p>

<p>Chlorine has isotopes 35 and 37. The active part is the last missing cap on a Carbon nuclet resulting in a valence of -1. Similar to the other halogens.</p>

<p>&nbsp;</p>

<p>Impossible!</p>

<p>This is a depiction of Sulfur that would be (more or less) the result of two Oxygen's fusing together creating the "expected" shape of what would be Sulfur that would have similar properties to Oxygen.</p>

<p>However this shape seems to be inherently unstable and would decay to the normal Sulfur element whereby the 5 ending would not be created, but these 5 protons would migrate during the formation of this element to the here shown 4 ending position.&nbsp;&nbsp;</p>

<p>Strontium 86 has like the other earth metal two Lithium endings resulting in a +2 valence.&nbsp;</p>

<p>This depicts Krypton 80 with only neutral endings. There are 4 potential places for an 'extra neutron' at these neutral endings.</p>

<p>Valence is 0, no active nuclets.</p>

<p>&nbsp;</p>

<p>Br79</p>

<p>&nbsp;</p>

<p>2 missing protons on the two inner 5 rings that support the backbone seem to be able to be a 4 ring when the outer branch has enough strength through another 5 ring. The outer 5 ring seems to prevent the proton movement of the neutral endings and active nuclets, "like a stick in a wheel"</p>