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Whereas the vertical columns on the Periodic Table are called "groups", and represent the number of electrons in an element's outermost electron shell (eg. group 2 elements have twoelectrons in their farthest energy level), the horizontal rows, known as "periods", refer to the number of energy shells surrounding the nucleus of an element.

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What are the horizontal rows elements called on a periodic table?

The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.


Are periods horizontal rows on the periodic table?

rows. the vertical columns are called periods


What are periods in the periodic table?

They are the horizontal rows in the periodic table


How do you call the horizontal row of a periodic table?

The horizontal rows in a periodic table are called periods. Periods represent the number of energy levels an atom's electrons occupy in an element's electron cloud.


What are the horizontal from left to right parts of the periodic table called?

The horizontal rows are referred as periods. There are 7 periods in periodic table.


What are the two names for horizontal rows on the periodic table?

The two names for horizontal rows on the periodic table are periods and series.


Are periods on the periodic table horizontal?

Yes. the horizontal rows on the periodic table are called periods.


The rows of the periodic table are called?

A horizontal row is called a period .


A period is a horizontal on the periodic table true or false?

Yes!The elements are arranged in horizontal rows and vertical columns to represent what is called the periods on the periodic table.


Horizontal rows in the periodic table?

period


What are the horizontal rows in the periodic table are known as?

The horizontal rows in the periodic table are known as periods. There are seven periods in the periodic table, each representing a different energy level or shell in which the elements' electrons are located.


What r the rows called on the periodic table?

Horizontal rows on the Periodic Table of Chemical Elements are called periods.