When using the following code, I note that the circle above the "A" in angstrom is not centred correctly over the "A" but it is too far to the left. How do I fix this?
\documentclass{article}
\usepackage{multicol}
\usepackage{tgbonum}
\usepackage{geometry}
\usepackage{chemfig}
\usepackage{siunitx}
\geometry{
a4paper,
total={170mm,257mm},
left=20mm,
top=20mm,}
\begin{document}
\section{Introduction}
\begin{multicols}{2}
Additionally, it is accompanied by a drastic change in end-to-end distance of ~3.5 {\si\angstrom} as well as polarity (3 Debye for $cis$ versus 0 Debye for $trans$).
\end{multicols}
\end{document}