A:原子序数:X<Y<Z
B:气态氢化物稳定性:XH3<YH3<ZH3
C:元素的非金属性强弱:X>Y>Z
D:电子层数:Y>X>Z
—Look! All students in the classroom are preparing for the coming exams_____.
—Yes, the exams are very important to them.
氮化硼是一种新合成的结构材料,具有超硬、耐磨、耐高温的特点.下列各组物质熔化时,所克服的微粒间作用力与氮化硼熔化所克服的微粒间作用力相同的是( )