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they are numbered by their Atomic numbers

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Related Questions

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


A horizontal row of elements on the periodic table is called?

The horizontal rows of the periodic table are called Periods and the vertical rows are called groups.


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.


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.


What are the horizontional rows?

The horizontal rows on the Periodic Table are called periods.


The horizontal rows on the periodic table are called?

The horizontal rows are called periods