\documentclass[10pt,a4paper]{article}
\usepackage{pgfplots}
\usepackage{tikz}
\usepackage{tikzorbital}
\begin{document}
\begin{figure}[h]
\centering
\begin{tikzpicture}
\draw[->] (0,0) -- (0,5);
\node at (0,5.2) {E};
\drawLevel[elec = pair, pos = {(0.5,0.5)}, width = .5,style={line width=.5},spinstyle={very thick, color = red!80, -stealth},spinlength={.5}];
\drawLevel[elec = pair, pos = {(2,2)}, width = .5,style={line width=.5},spinlength={.5}];
\drawLevel[elec = up, pos = {(3.5,3.5)}, width = .5,style={line width=.5},spinlength={.5}];
\drawLevel[elec = up, pos = {(4.2,3.5)}, width = .5,style={line width=.5},spinlength={.5}];
\drawLevel[elec = none, pos = {(4.9,3.5)}, width = .5,style={line width=.5},spinlength={.5}];
\end{tikzpicture}
\caption{Bindungsfähige Elektronen des Kohlenstoffs.}
\end{figure}
\end{document}
Vielleicht weiß da jemand weiter

