Problem: Rank the following elements by effective nuclear charge, Zeff, for a valence electron. Pb Bi Po Rn Ba

🤓 Based on our data, we think this question is relevant for Professor Patterson's class at TXSTATE.

FREE Expert Solution

The trend for Zeff:

  • Increase across a period (due to increasing nuclear charge with no accompanying increase in shielding effect).
  • Decrease down a group (although nuclear charge increases down a group, shielding effect more than counters its effect).

The given elements as shown in the periodic table.

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Problem Details

Rank the following elements by effective nuclear charge, Zeff, for a valence electron. 

Pb Bi Po Rn Ba

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