electron affinities (the energy associated with gaining anelectron) of the period 3 elements. Refer to the graphs toanswer the questions
(d) Describe the general trend in period 3 electron affinities as you move from left to right across the periodic
table. Explain why this trend occurs. (Hint: Consider
the trend in atomic size as you move from left to right
across the periodic table.)
(e) The trend in electron affinities has exceptions. Write
the electron configurations of Si and P and explain
why the
than that of P.
(f) Determine the overall energy change for removing one electron from Na and adding that electron
to Cl. Is the exchange of the electron exothermic or
endothermic?
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