The type of overlapping in `Br-F` bond in `BrF_(1)`molecule is

The type of overlapping in Br-F bond in BrF_3 molecule is

The percentage ionic character in H-Br bond in HBr molecule is "________________" , given the electronegativity of H and Br are 2.1 and 2.8 respectively .

The shape of BrF_(5) molecule is ……………

Why does type of overlap given in the following figure not result in bond formation?

Why does type of overlap given in the following figure not result in bond formation?