The recently discovered element 114 should most closely resemble Pb. (a) Write the electron configuration of \(\mathrm{Pb}\). (b) Propose a plausible electron configuration for \(8 \equiv\) element 114.

Short Answer

Expert verified
The electron configuration of Pb is \([Kr] 4d^{10} 5s^{2} 5p^{6} 4f^{14} 5d^{10} 6s^{2} 6p^{2}\). A plausible electron configuration for element 114 is \([Rn] 5f^{14} 6d^{10} 7s^{2} 7p^{2}\).

Step by step solution

01

Identify the Electron Configuration of Pb (Lead)

Given that its atomic number is 82, the electron configuration of Lead (Pb) can be determined by filling electrons according to the Aufbau principle. The electron configuration for Pb is \([Kr] 4d^{10} 5s^{2} 5p^{6} 4f^{14} 5d^{10} 6s^{2} 6p^{2}\).
02

Predict the Electron Configuration of Element 114

Knowing that elements in the same group in the periodic table have similar properties due to their similar electron configurations, the element 114 should resemble Pb. This is because they belong to the same group (Group 14). The last electron enters the p-orbital same as in Pb. Therefore, the electron configuration may be derived from that of Pb by adding 32 more electrons (difference between 114 and 82), which would be inserted according to Aufbau principle. The plausible electron configuration of element 114 could be \([Rn] 5f^{14} 6d^{10} 7s^{2} 7p^{2}\).

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