Classification of Matter A.1 Periodic Table Elements Classification (id: 15811bd

本题目来源于试卷: Classification of Matter A.1 Periodic Table Elements Classification，类别为 IB化学

[单选题]
Which of the following 2w+k v /whw+da88ubqais the tpx5yjrxuz1*n gh*z;zv s1)6d1g xfq j r .3*vcorrect formula for strontium sulfide?

A. $S{r}_2{S}_2$
B. $Sr{S}_2$
C. $SrS$
D. $S{r}_{2}S$


参考答案:  C


本题详细解析:
Explanation:

Strontium is in group 2 and so forms $S{r}^{2+}$ ions. The formula of the sulfide ion is $S^{2-}$ as sulfur is in group 16. For the positive and negative charges to cancel out, one of each ion is required.

微信扫一扫，分享更方便