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How are properties of atoms used to organize elements into the
How are properties of atoms used to organize elements into the

... Elements are arranged in the periodic table according to their atomic structure and properties • PERIODS – rows on the periodic table (side ways) • represents the number of energy levels that contain electrons • FAMILES – columns or groups on the periodic table (up and down) • represents the number ...
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Chapter 4: Energy Guided Reading
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PART 1: ATOMIC NUMBER - hrsbstaff.ednet.ns.ca

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The periodic table

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Period 5 element

A period 5 element is one of the chemical elements in the fifth row (or period) of the periodic table of the elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the elements as their atomic number increases: a new row is begun when chemical behaviour begins to repeat, meaning that elements with similar behaviour fall into the same vertical columns. The fifth period contains 18 elements, beginning with rubidium and ending with xenon. As a rule, period 5 elements fill their 5s shells first, then their 4d, and 5p shells, in that order, however there are exceptions, such as rhodium.
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