prysm/svg/atoms/ion-horizontal.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 32" width="48" height="32">
  <!-- 0-atoms/ion/horizontal -->
  <!-- prysm atom, acid palette -->
  <rect id="ion" x="8.0" y="-8.0" width="32.0" height="48.0" style="fill:#00fe00"/>
</svg>

Neighbours