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Atomic size decreases from left to right in a period hence ioniztion energy increases from left to right.But atomic size increases from top to bottom in a group hence ionization energy decreases from top to bottom.

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Q: What are two trends in the periodic table?
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Related questions

How do periodic trends affect bonding?

Periodic trends affect bonding due to the arrangement of the elements on the periodic table. The periodic table only includes chemical elements.


What did organizing information on the periodic table reveal?

Periodic patterns and trends


The periodic table is called periodic because the?

in 1869 periodic trends in the properties of the then-known elements


How are the trends in the periodic table helpful in identifying an element?

The periodic trends that arise from the arrangement of the periodic table provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or period and the periodic nature of the elements.


What are rows in periodic table used for?

The rows are used to study the change in trends. There are 7 periods in periodic table.


What trends were seen in Mendeleev's periodic table?

he arranged his Periodic Table by each elements Atomic Mass


What periodic trends did did Mendeleev organize his periodic table by?

Atomic Mass Octaves and Triads


What periodic trends did Mendeleev organize his periodic table by?

atomic mass, triads, and octaves


Who wrote the periodic table and what was it?

A Russian chemist named Dmitri Mendeleev wrote it and this periodic table was a table to illustrate recurring trends in the properties of elements.


How do one recognize a periodic trend on the periodic table?

Studying physical and chemical properties of chemical elements it is possible to recognize some trends in the periodic table.


What periodic trends of reactivity occur with the alkali metals?

Reactivity increases the farther down you go in the Periodic Table.


Which comes first electronegativity electron configuration periodic trends ionic radius atomic radius ionization energy or periodic table?

On the periodic table there is no such order of first and second as asked in the question.