JAMB - Chemistry (1993 - No. 8)
Which group of elements forms hydrides that are pyramidal in structure?
III
IV
V
VI
คำอธิบาย
Group V elements (also known as pnictogens) form hydrides that are pyramidal in structure. The trihydrides, such as NH\(_3\) (ammonia), PH\(_3\) (phosphine), AsH\(_3\) (arsine), and SbH\(_3\) (stibine), all exhibit a pyramidal shape.