用化学符号填空: (1)2个汞原子______; (2)葡萄糖分子______;
题型:问答题
问题:
用化学符号填空:
(1)2个汞原子______;
(2)葡萄糖分子______;
(3)3个硝酸根离子______;
(4)氯化镁中镁元素显+2价______.
(5)一个氦气分子______.
用化学符号填空:
(1)2个汞原子______;
(2)葡萄糖分子______;
(3)3个硝酸根离子______;
(4)氯化镁中镁元素显+2价______.
(5)一个氦气分子______.