Question

Br- is formed when a bromine atom *


a) loses an electron in ionic bonding


b) Gains an electron in ionic bonding


c) Gains an electron in molecular bonding


d) Loses an electron in molecular bonding

Answer 1

Answer: b) Gains an electron in ionic bonding.

Comment:Because Br has a higher electronegativity, the attracts electrons at ion bonding. For example, in NaBr, Na gives electrons (Na⁺ is formed), Br takes electrons (Br^- is formed), and the ions formed compete with each other to form a molecule. such work is called ion work.