# Problem: The outermost valence electron in atom A experiences an effective nuclear charge of 2+ and is on average 225 pm from the nucleus. The outermost valence electron in atom B experiences an effective nuclear charge of 1+ and is on average 175 pm from the nucleus.Which atom (A or B) has the highest first ionization energy?

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###### FREE Expert Solution
• Ionization is the process by which an atom loses or gains an electron
• Ionization energy relies upon the attraction of the nucleus to the outermost electron. Thus if the attraction is strong, the ionization energy is high
• This particular attraction to the Coulomb's Law which states that:

• We can calculate this force of attraction by plugging in the values we got in the given and compare the F we got
###### Problem Details

The outermost valence electron in atom A experiences an effective nuclear charge of 2+ and is on average 225 pm from the nucleus. The outermost valence electron in atom B experiences an effective nuclear charge of 1+ and is on average 175 pm from the nucleus.

Which atom (A or B) has the highest first ionization energy?