Germanium (Ge)

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Practice germanium

Questions from the course about germanium. If you’re signed in, your answers count toward your progress.

1. Question 1Ground-state electron configurationExam level

   Which is the ground-state electron configuration of a neutral germanium atom ($\ce{Ge}$)?

   A$[\mathrm{Ar}]\,4s^{2}\,3d^{10}\,4p^{3}$B$[\mathrm{Ar}]\,4s^{2}\,3d^{10}\,4p^{2}$C$[\mathrm{Ar}]\,4s^{2}\,4p^{2}$D$[\mathrm{Ar}]\,4s^{2}\,3d^{10}\,4p^{1}$

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2. Question 2Estimate the effective nuclear chargeWarm-up

   Use the simple shielding model $Z_{\text{eff}} = Z - S$, where $S$ is the number of core (inner-shell, $n < 4$) electrons and electrons in the same shell do not shield each other. What is $Z_{\text{eff}}$ for a valence electron of germanium ($\ce{Ge}$)?

   Your answer

   Whole number.

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3. Question 3Compare two elements and explainWarm-up

   Which element has the higher electronegativity, $\ce{K}$ or $\ce{Ge}$, and why?

   AGe: it has more occupied electron shells.BK: it has fewer valence electrons, so it attracts extra electrons more strongly.CK: electronegativity decreases from left to right across a period.DGe: it has a larger effective nuclear charge on valence electrons in the same shell (n = 4), so it attracts bonding electrons more strongly.

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