初三科学写出符号及化合价(通常)
先写符号再写化合价.
1.铵根._____.______
2.钙._____._____
3.氧._____._____
4.氢氧根._____._____
5.镁.._____._____
6.碳酸根._____._____
7.铝._____._____
8.硫酸根._____._____
9.银._____._____
10.硝酸根.._____._____
11.铁._____._____
12.氯._____._____
13.钠._____._____
14.钾._____._____
15.铁._____._____
16.铜._____._____
17.钡._____._____
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