Rank the elements in each of the following sets in order of decreasingIE1: a, Kr, He, Ar   B, Sb, Te, Sn  C,  K , Ca, Rb  d, I, Xe, Cs Arrange the following elements in order of decreasing first ionization energy: S,     Ca     F,    Rb, Si

Chemistry by OpenStax (2015-05-04)
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Chapter6: Electronic Structure And Periodic Properties Of Elements
Section: Chapter Questions
Problem 72E: Based on their positions in the periodic table, rank the following atoms in order of increasing...
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Rank the elements in each of the following sets in order of decreasingIE1:

a, Kr, He, Ar   B, Sb, Te, Sn  C,  K , Ca, Rb  d, I, Xe, Cs

Arrange the following elements in order of decreasing first ionization energy:

S,     Ca     F,    Rb, Si

 

Expert Solution
Step 1: A) and B) sets in order of decreasing IE1

A) Kr, He, Ar

If we go down the group the effective nuclear charge goes on increasing and also and also principal quantum number is increasing.

decreasing order of IE1

 He > Ar > Kr

 

 B) Sb, Te, Sn

Valence Electronic configuration

Sb = nsnp3 ( It is half filled valence electrons  orbital more stable.)

Te = ns2 np4

Ar = nsnp2

decreasing order of IE1

Sb > Te > Sn

 

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