PERIODIC TABLE
WHAT IS ELECTRON AFFINITY?
HOW DOES IT CHANGE DOWN THE GROUP AND ALONG A PERIOD IN PERIODIC TABLE? AND WHY?
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UP 0 DOWN 0 0 1
1 Answers
283Electron affinity is the energy release in adding up an electron to a neutral atom in its gaseous state to form an negative ion.
X(g) + e- → X- + Energy(E.A)
E.A increase across the period as non metal have high E.A a metal.( Since metallic character decrease across the period so E.A increase across period.
E.A decrease down the group because metallic characters increase down the group.