錼（粵拼：Noi6，英文Neptunium），又叫鎿，係一種元素，符號Np。「錼」係而家港澳台用嘅譯名，唔同地區翻譯唔同，而家大陸、新加坡係用嘅譯名係「镎」，台灣曾經將佢翻譯成「釢」。原子序號93，原子重量237.0482。佢密度20.45，溶點913.15，沸點4273，電負度有1.36。
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