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July 29, 2015

Homework Help: physical science

Posted by Sheryl on Monday, October 17, 2011 at 1:22am.

The ionization energies of Li, Na, K, Rb, and Cs are respectively 5.4, 5.1, 4.3, 4.2, and 3.9 eV. All are in Group 1 of the periodic table. Explain the decrease in ionization energy with increasing atomic number in this group.

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