用化学符号填空：两个氢原子___；干冰_；锌离子_____；硝

用化学符号填空：

两个氢原子_______；干冰_______；锌离子_______；硝酸铁_______；乙醇_______；

氧化镁中镁元素的化合价为＋2价______。

答案

H；CO₂；Zn²⁺Fe(NO₃)₃C₂H₅OH；；

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用化学符号填空： 两个氢原子_______；干冰_______；锌离子_______；硝

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用化学符号填空：两个氢原子___；干冰_；锌离子_____；硝