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Зэс — Википедиа нэвтэрхий толь
Зэс (Cu -гэж химийн шинжлэх ухаанд тэмдэглэдэг химийн элемент — латин. Cuprum) атомын дугаар нь 29, нэгэн төрлийн химийн элемент юм. Цэвэр зэсийн гадарга нь улбар улаан өнгөтэй байдаг. Зэс нь зөөлөн металл бөгөөд маш сайн цахилгаан дамжуулах чадвартай тул, цахилгаан болон …
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