Periodic trends in electron configuration

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Last updated 2:22 PM on 7/10/26
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6 Terms

1
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How are the elements ordered in periodic table

By increasing atomic number, in other words by the number of protons.

2
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What are periods

The horizontal rows, tells us the number of the highest energy electron shell for the elements in that period, e.g all elements in period 4, the highest energy electron shell is shell 4

3
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What are metalloids

They are between metals and non metals, they have properties of both metals and non metals.

<p>They are between metals and non metals, they have properties of both metals and non metals.</p>
4
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What is periodicity

The pattern of repeating trends.

5
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What does shell 3 have

The 3d subshell, has max of 10electrons

4s subshell has lower energy than 3d subshell,

<p>The 3d subshell, has max of 10electrons</p><p>4s subshell has lower energy than 3d subshell, </p>
6
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