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今本(此為底本,未經審校)
文出維基大典
硒之貌

者,洋謂Selenium化學元素也,符號Se,原子序三十四,屬非金屬。色灰,不溶於水,性穩抗

同位素

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同位素者卅九,自硒六五至硒九四。性穩者有五,曰硒七四,曰硒七六,曰硒七七,曰硒七八,曰硒八十。以硒八十為盛,二者有一。

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  • 人之所需元素也,乃微量礦物營養素。
  • 若夫光存,則硒之導電能優於暗,以為光電池。
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