noun
electron pair
In chemistry and physics, two electrons that are paired, such as in a covalent bond or a lone pair.
共有結合では、原子が電子対を共有する。
In a covalent bond, atoms share an electron pair.
超伝導状態では、電子がクーパー対（電子対）を形成する。
In the superconducting state, electrons form Cooper pairs (electron pairs).
クーパー対 is the more specific term for Cooper pair, often used in physics contexts. 電子対 can also refer to Cooper pairs in broader contexts.
Compound of 電子 (electron) and 対 (pair). A straightforward technical term.