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Chapter 8: Problem 67

Describe the trend in bond length as you move down the elements in Group 17 on the periodic table.

Short Answer

Expert verified
The bond length increases as you move down the elements in Group 17 on the periodic table, due to an increase in atomic radii of these elements.

Step by step solution

01

Identify Group 17 Elements

Group 17 elements on the periodic table are known as halogens. They include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
02

Understand Atomic Radii Trend in Group 17

As you move down Group 17 elements in the periodic table, the atomic radius of these elements increases. This is because of the addition of energy levels or 'shells' around the nucleus that increases the distance between the nucleus and the bonding electrons.
03

Linking Atomic Radius to Bond Length

A greater atomic radius generally means longer bond lengths. This is because the bond length is determined by the distances at which nuclei in a bond set up their shared electron clouds. Therefore, with a bigger atomic radius, the bond length tends to be longer.
04

Summarize Bond Length Trend

In conclusion, as you move down the elements in Group 17 on the periodic table (from F to At), the bond length tends to increase. This is due to the increase in atomic radii of the elements.

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