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SciCode / 10.9 / Write a Python function to calculate the real-space summation of the self terms…

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Write a Python function to calculate the real-space summation of the self terms from given `atom_charges`, `nelec`, and `alpha`.

\begin{align}
E_{\textrm{real-self}} &= - \frac{\alpha}{\sqrt{\pi}} \sum_{i=1}^N q_i^2.
\end{align}

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upstream_id / Original problem ID: 10.9
task_id: fbeb1219-4bfc-590c-a244-bba812073f50
task_key: dev--69e335f0-d1ca-5a82-bab6-b343e9761c03--10~2e9
task_revision_id: 3
config / split: / dev

Official source

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