Which of the following oxides is acidic in nature?
$B_2O_3$
$Ga_2O_3$
$Al_2O_3$
$In_2O_3$
In diborane, the two $H - B - H$ angles are nearly
Anhydrous aluminium chloride fumes in moist air owing to the formation of
Which of the following is correct
Write preparation of diborane and give physical and chemical properties of it.
Assertion : Boron is metalloid.
Reason : Boron shows metallic nature.