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Q: Among the elements listed, which would show the largest increase between the second and third ionization energies? A. B B. P C. Ca D. Zn
A: IPs taken from Wikipedia entries RHP B: [He] 2s^2 2p^1 3rd e? removed is 2s still same principle quantum number reasonable energy 1st: 800.6 kJ·mol-1 2nd: 2427.1 kJ·mol-1 3rd: 3659.7 kJ·mol-1 P: [Ne] 3s^2 3p^3 3rd e? removed is 3p still same [ principle quantum number reasonable energy 1st: 1011.8 kJ·mol-1 2nd: 1907 kJ·mol-1 3rd: 2914.1 kJ·mol-1 Ca: [Ar] 4s^2 Whoa! 3rd e? removed is a core 3p e?
predict humungous increase between 2nd and 3rd IP 1st: 589.8 kJ·mol-1 2nd: 1145.4 kJ·mol-1 3rd: 4912.4 kJ·mol-1 Zn: [Ar] 3d^10 4s^2 3rd e? removed is 3d e? bad but not as bad as Ca 1st: 906.4 kJ·mol-1 2nd: 1733.3 kJ·mol-1 3rd: 3833 kJ·mol-1 ]
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User: Among the elements listed, which would show the largest increase between the second and third ionization energies? A. B B. P C. Ca D. Zn





Weegy: IPs taken from Wikipedia entries RHP B: [He] 2s^2 2p^1 3rd e? removed is 2s still same principle quantum number reasonable energy 1st: 800.6 kJ·mol-1 2nd: 2427.1 kJ·mol-1 3rd: 3659.7 kJ·mol-1 P: [Ne] 3s^2 3p^3 3rd e? removed is 3p still same [ principle quantum number reasonable energy 1st: 1011.8 kJ·mol-1 2nd: 1907 kJ·mol-1 3rd: 2914.1 kJ·mol-1 Ca: [Ar] 4s^2 Whoa! 3rd e? removed is a core 3p e? predict humungous increase between 2nd and 3rd IP 1st: 589.8 kJ·mol-1 2nd: 1145.4 kJ·mol-1 3rd: 4912.4 kJ·mol-1 Zn: [Ar] 3d^10 4s^2 3rd e? removed is 3d e? bad but not as bad as Ca 1st: 906.4 kJ·mol-1 2nd: 1733.3 kJ·mol-1 3rd: 3833 kJ·mol-1 ]
Expert answered|thederby|Points 1349|

User: Among the elements listed, which would show the largest increase between the second and third ionization energies? A. B B. P C. Ca D. Zn

Weegy: The successive ionization energies show a significant jump between the second and third IE’s, indicating that the second electron removed occupies a different orbital than the third electron removed. [ There is no significant jump between the third, fourth or fifth IE’s, indicating that the third, fourth, and fifth electrons to be removed occupy the same orbital. ]
Expert answered|thederby|Points 1349|

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Asked 8/16/2012 10:50:23 AM
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