{ Trends in the Periodic Table. COLUMNS in the periodic table Also called Families Similar...

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{ Trends in the Periodic Table

description

 ROWS in the Periodic Table  Periodic recurrence of similar properties; Trending  Solids to liquids to gases  Losing electrons to gaining electrons  Etc. Periods

Transcript of { Trends in the Periodic Table. COLUMNS in the periodic table Also called Families Similar...

Page 1: { Trends in the Periodic Table.  COLUMNS in the periodic table  Also called Families  Similar characteristics Groups.

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Trends in the Periodic Table

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COLUMNS in the periodic table Also called “Families” Similar characteristics

Groups

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ROWS in the Periodic Table Periodic recurrence of similar

properties; Trending Solids to liquids to gases Losing electrons to gaining

electrons Etc.

Periods

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Interactive Periodic Table

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Periodic Table Trend: Atomic Size

Why?

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Periodic Table Trend: Atomic Size

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Because… Down a group

Each row adds another energy level (orbit / shell) – so the outermost electron is farther from the nucleus And the atom gets bigger

Across a period The number of protons increases,

so the increasing positive charge holds the electrons more tightly

And since the energy level of the outermost electron is the same, the atom gets smaller