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Chapter 22: Problem 2

Describe the trend in EN as one moves from left to right across a period of the periodic table.

Short Answer

Expert verified
The trend in electronegativity as one moves from left to right across a period in the Periodic Table is that it increases.

Step by step solution

01

Understand Electronegativity

Electronegativity is the measure of the tendency of an atom to attract electrons towards itself. It is an important concept in chemistry.
02

Familiarize with Periodic Table

A Period in the Periodic table refers to the horizontal rows. Elements in the same period have the same number of electron shells. Moving from left to right in a period, each element has one more proton in its nucleus and one more electron in its outer shell compared to the element to its left.
03

Electronegativity trend description

As you move from left to right across a period in the periodic table, the electronegativity increases. This is due to the increase in the charge of the nucleus, which has more protons, and the decrease in atomic radius (the number of electron shells is constant in the same period but the number of electrons is increasing). Therefore the nucleus attracts the electrons more strongly.

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Most popular questions from this chapter

When an ionic bond is formed, what type of atom (in terms of relative electronegativity) is likely to: a) lose one or more electrons? b) gain one or more electrons? Explain your reasoning.

Why do homonuclear molecules \(\left(\mathrm{H}_{2}, \mathrm{Cl}_{2}, \mathrm{~N}_{2}\right.\), and so on \()\) have nonpolar bonds?

What general statement can be made about the sum of the charges on both sides of a balanced chemical reaction?

What does the arrow represent in a chemical reaction?

Describe the trend in EN as one moves down a group of the periodic table.
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