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Chapter 7: Problem 111

Arrange the following groups of atoms in order of increasing size. a. Te, S, Se b. K, Br, Ni c. Ba, Si, F

Short Answer

Expert verified
The order of increasing atomic size for the given groups of atoms is: a. S < Se < Te b. Ni < Br < K c. F < Si < Ba

Step by step solution

01

Identify the elements' positions in the periodic table

Te (Tellurium) is in the Group 16 (Chalcogens) and Period 5. S (Sulfur) is in Group 16 (Chalcogens) and Period 3. Se (Selenium) is in Group 16 (Chalcogens) and Period 4.
02

Determine the trend in atomic size

Since all elements are in the same group (Group 16), we expect the atomic size to increase with increasing period number. Thus, the order of increasing atomic size for these elements is: S < Se < Te #b. K, Br, Ni# We will follow these steps to find the order of increasing atomic size: 1. Identify the elements' positions in the periodic table. 2. Determine the trend in atomic size.
03

Identify the elements' positions in the periodic table

K (Potassium) is in Group 1 (Alkali Metals) and Period 4. Br (Bromine) is in Group 17 (Halogens) and Period 4. Ni (Nickel) is in Group 10 (Transition Metals) and Period 4.
04

Determine the trend in atomic size

Since all elements are in the same period (Period 4), we expect the atomic size to decrease as we move left to right across the periodic table. Thus, the order of increasing atomic size for these elements is: Ni < Br < K #c. Ba, Si, F# We will follow these steps to find the order of increasing atomic size: 1. Identify the elements' positions in the periodic table. 2. Determine the trend in atomic size.
05

Identify the elements' positions in the periodic table

Ba (Barium) is in Group 2 (Alkaline Earth Metals) and Period 6. Si (Silicon) is in Group 14 (Carbon Group) and Period 3. F (Fluorine) is in Group 17 (Halogens) and Period 2.
06

Determine the trend in atomic size

The elements are in different groups and periods. To address this, we can use their period numbers and use the trend of increasing atomic size down a group. Thus, the order of increasing atomic size for these elements is: F < Si < Ba

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Most popular questions from this chapter

What are the possible values for the quantum numbers \(n, \ell,\) and $m_{\ell} ?$

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Which has the more negative electron affinity, the oxygen atom or the \(\mathrm{O}^{-}\) ion? Explain your answer.
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