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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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Most popular questions from this chapter

Round off each of the following numbers to two significant figures:

(a) 517

(b) 86.3

(c) 6.382 脳103

(d) 5.0008

(e) 22.497

(f) 0.885

Perform the following calculations and report each answer with the correct number of significant figures.

(a) 628 脳 342

(b) (5.63 脳102) 脳 (7.4 脳103)

(c) 28.0/ 13.483

(d) 8119 脳 0.000023

(e) 14.98 + 27,340 + 84.7593

(f) 42.7 + 0.259

Complete the following conversions between SI units.

(a) 612 g = ________ mg

(b) 8.160 m = ________ cm

(c) 3779 渭g = ________ g

(d) 781 mL = ________ L

(e) 4.18 kg = ________ g

(f) 27.8 m = ________ km

(g) 0.13 mL = ________ L

(h) 1738 km = ________ m

(i) 1.9 Gg = ________ g

Question: A chemist鈥檚 50-Trillion Angstrom Run (see Exercise 1.78) would be an archeologist鈥檚 10,900 cubit run. Howlong is one cubit in meters and in feet? (1 脜 = 1 脳 10-8 cm)

Of the five elements Sn, Si, Sb, O, Te, which has the most endothermic reaction? (E represents an atom.) What

name is given to the energy for the reaction?

\({\bf{E}}(g) \to {{\bf{E}}^ + }(g){\rm{ }} + {\rm{ }}{{\bf{e}}^ - }\)
See all solutions

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