NEET2005Chemistryp Block Elements (Group 13 & 14)Actual
In diborane, the two H - B - H angles are nearly
Options
- A60^ , 120^
- B95^ , 120^
- C95^ , 150^
- D120^ , 180^ .
Correct answer
B. 95^ , 120^
Step-by-step solution
Dilthey in 1921 proposed a bridge structure for diborane. Four hydrogen atoms, two on the left and two on the right, known as terminal hydrogens and two boron atoms lie in the same plane. Two hydrogen atoms forming bridges, one above and other below, lie in a plane perpendicular to the rest of molecule.