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氯及其化合物

> 关于非金属元素O、N、S、Cl的叙述，正确的是 A．在通常情况下，其单质均为气体 B．非金属性按O、N、S、Cl顺序依次递减 C．每种元素只能形成一种氢化物 D．都属于主族元素

问题：

发布时间：2024-09-13

关于非金属元素O、N、S、Cl的叙述，正确的是

A．在通常情况下，其单质均为气体 B．非金属性按O、N、S、Cl顺序依次递减

C．每种元素只能形成一种氢化物 D．都属于主族元素

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