Which of the following thermochemical equations represents the electron affinity of atomic bromine if the electron affinity is -330 kJ/mole? a
Br + e- +330 kJ → Br-

b
Br + e- → Br- + 330 kJ

c
Br + e- → Br- - 330 kJ

d
Br- + 330 kJ → Br + e-

that's what i got you can count the number of atoms

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.