Ncert Exercises & Solutions

Which of the following is true regarding the structure of diborane?

1.	All hydrogen atoms lie in one plane and boron atoms lie in a plane perpendicular to this plane.
2.	2 boron atoms and 4 terminal hydrogen atoms lie in the same plane and 2 bridging hydrogen atoms lie in the perpendicular plane.
3.	4 bridging hydrogen atoms and boron atoms lie in one plane and two terminal hydrogen atoms lie in a plane perpendicular to this plane.
4.	All the atoms are in the same plane.