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PART A: Based on position in the periodic table and electron configuration, arrange these elements in...

PART A:
Based on position in the periodic table and electron configuration, arrange these elements in order of decreasing E11 (ionization energy) .
Rank the elements from highest to lowest ionization energy. To rank items as equivalent, overlap them.

K, O, Na, P, Al, S

PART B:
Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess?

ionization step: ionization energy (kJ/mol):
E11 1012
E12 1903
E13 2912
E14 4956
E15 6273
E16 22233
E17 25957
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Answer #1
O, P, S, Al, Na, K is the ionization from highest to lowest

5 valence electrons... the first 5 IE values are pretty low... kinda easy to take those first 5 electrons away. once you try to take the 6th, BAM! IE jumps way up because it's hard to take an electron from an atom with an octet, which is what this atom has once you've taken 5 away.
Use my favorite periodic chart: http://www.touchspin.com/chem/DisplayTab…

5-valence electrons

P 1,060 1,890 2,905 4,950 6,270 21,200
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