Question

which atom in the br-f molecule has a partial positive charge (δ+)?

Explanation:

In a polar covalent bond, the more electronegative atom attracts the shared electrons more strongly, resulting in a partial negative charge ($\delta^-$) on the more electronegative atom and a partial positive charge ($\delta^+$) on the less electronegative atom. Fluorine ($F$) is more electronegative than bromine ($Br$). So, in the $Br - F$ molecule, $Br$ has a partial positive charge.

Answer:

A. Br