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Chapter 1: Q59E (page 9)

Question:Which of the following has two unpaired electrons?

(a) Mg

(b) Si

(c) S

(d) Both Mg and S

(e) Both Si and S.

Short Answer

Expert verified

(e) both Si and S.

Step by step solution

01

determining if Mg has 2 unpaired electrons

Using the electron configuration table, we can observe that Mg has 2 electrons in its valence shell.

MG =

Hence, there is no unpaired electron.

02

determining if Si has 2 unpaired electrons

Using the electron configuration table, we can observe that Si has 2 electrons in the 3p orbital.

Hence, there are two unpaired electrons.

03

determining if S has 2 unpaired electrons

Using the electron configuration table, we can observe that S has 4 electrons in the 3p orbital.

Hence, there are two unpaired electrons.

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