Interpretation: An explanation corresponding to the fact that bromine has negative
Concept introduction: The energy released or utilized during the addition of an electron to an isolated gaseous atom is said to be the electron affinity.
The release of energy results in negative value whereas addition of energy results in positive value.
To determine: An explanation corresponding to the fact that the electron affinity of bromine is negative and that for krypton is positive, using the electronic configuration of both elements.
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