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
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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?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Periodic Trends: Ionization Energy concept. You can view video lessons to learn Periodic Trends: Ionization Energy. Or if you need more Periodic Trends: Ionization Energy practice, you can also practice Periodic Trends: Ionization Energy practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Andrasi's class at UI.