Question

why is inner mitochondrial memb impermeable to H+ions?best will b marked as brainliest

Answer 1

because the inner membrane bears 5 complexs in which last one Fo-F1 allows H+ ions through it and helps in ATP formation and sends to outer membrane
so due to 5 th complex H+ions doesn't go

Answer 2

Due to the christae in the middle: the increased surface area assures that more H+ can be channeled back to the matrix before it has a chance to diffuse out the relatively smaller surface area of the outer membrane. In short, the difference is due to surface area across which the ions could move.