鎳者,化學元素也,符號Ni,原子序廿八,屬過渡金屬。色銀白,不溶於水,具有磁性。Ni2+離子色綠。
具磁性。
性堅而韌,延性佳,乃重要之材。
曝之空氣,弗氧化矣。
其化合物有毒。
同位素者卅一,自鎳四八至鈷七八。性穩者有五,曰鎳五八,曰鎳六十,曰鎳六一,曰鎳六二,曰鎳六四,以鎳五八為盛,三者有二。
灼鎳礦、還原可得。
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