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Chapter 13: Problem 7

Without attempting to draw a Lewis structure, calculate the total number of valence electrons in each of these molecules: a) \(\mathrm{H}_{2} \mathrm{CO}\) b) \(\mathrm{N}_{2}\) c) \(\mathrm{Cl}_{2}\)

Short Answer

Expert verified
The total number of valence electrons for \(\mathrm{H}_{2} \mathrm{CO}\) is 12, for \(\mathrm{N}_{2}\) is 10, and for \(\mathrm{Cl}_{2}\) is 14.

Step by step solution

01

Determining the number of valence electrons for each atom type

To calculate the number of valence electrons, it is important to know how many valence electrons each type of atom has. Hydrogen (H) has 1 valence electron, Carbon (C) has 4, Oxygen (O) has 6, Nitrogen (N) has 5, and Chlorine (Cl) has 7.
02

Calculating the total number of valence electrons for each molecule

To find the total number of valence electrons for each molecule:a) For \(\mathrm{H}_{2} \mathrm{CO}\), add the valence electrons of 2 Hydrogen atoms, 1 Carbon atom, and 1 Oxygen atom. That's \(2*1 + 4 + 6 = 12\).b) For \(\mathrm{N}_{2}\), add the valence electrons of 2 Nitrogen atoms. That's \(2*5 = 10\).c) For \(\mathrm{Cl}_{2}\), add the valence electrons of 2 Chlorine atoms. That's \(2*7 = 14\).

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Most popular questions from this chapter

For each of the following neutral atoms give the core charge. a) Li. b) \(\quad \ddot{\mathrm{Cl}}\) c) He:

Answer the following for the nitrogen atom: a) What is the Lewis representation for \(\mathrm{N} ?\) b) How many additional electrons does one \(\mathrm{N}\) atom require when it forms a molecule? c) What is the likely formula for a molecule composed of hydrogen atoms and one nitrogen atom? Draw the Lewis structure for this molecule.

For \(\mathrm{Cl}_{2}\), is the sum of the bonding electrons and the lone pair electrons (also known as nonbonding electrons) around each Cl atom consistent with the Lewis model?

What is the likely formula for a molecule composed of hydrogen atoms and one sulfur atom? Draw the Lewis structure for this molecule.

For \(\mathrm{N}_{2}\), is the sum of the bonding electrons and nonbonding electrons around each nitrogen atom consistent with the Lewis model?
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