身近な科学
Why do metals conduct electricity?
Sodium has 11 electrons; its outer 3s electron helps explain why sodium readily forms Na+.
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短い答え
Sodium has 11 electrons; its outer 3s electron helps explain why sodium readily forms Na+.
本当は何が起きている？
Table salt is not made of isolated NaCl molecules in the solid; it forms an extended ionic lattice.
役立つイメージ
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In a metal, some electrons are not confined to one bond between two atoms. Their collective electronic structure lets charge respond to an electric field.