Označeno: ogljikovodiki

Viri: https://en.wikipedia.org/wiki/2-Methylpentane https://en.m.wikipedia.ohttps://www.seilnacht.com/Chemie/ch_prope.htm rg/wiki/File:2-Methylpentane_2.png https://pl.wikipedia.org/wiki/Propen https://globalsymbols.com/symbolsets/srbija-simboli/symbols/26396?locale=en https://api.izzi.digital/preview/page/57679 https://globalsymbols.com/symbolsets/srbija-simboli/symbols/26396?locale=en https://api.izzi.digital/preview/page/57679 https://bs.wikipedia.org/wiki/Etan https://tr.wikipedia.org/wiki/Etan https://hr.wikipedia.org/wiki/Metan https://nn.wikipedia.org/wiki/Metan