[单选题]
An outline of the periodih4cg)urxx22qw ya, z8 c t fal4j4nic8 r;v2;m u.08yddi rr h3wtable is shown below:
Which of the following are the correct names for the groups labelled X, Y and Z?
A. $X$ is Transition metals ; $Y$ is Halogens ; $Z$ is Noble gases
B. $X$ is Transition metals ; $Y$ is Noble gases ; $Z$ is Halogens
C. $X$ is Alkali metals ; $Y$ is Halogens ; $Z$ is Noble gases
D. $X$ is Alkali metals ; $Y$ is Noble gases ; $Z$ is Halogens
参考答案: C
本题详细解析: Explanation:
The names of the labelled groups are covered explicitly in the syllabus.
