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The Periodic Table of Elements
Dmitri Mendeleev generally is credited with the creation of the first periodic table, which charts the chemical elements by atomic number and valence shell electron configuration.
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Period (periodic table) - Wikipedia

en.wikipedia.org/wiki/Period_(periodic_table)

A period is one of the horizontal rows in the periodic table, all of whose elements have the ... of people are sensitive to beryllium and may develop an inflammatory reaction in their respiratory sy...

What are the horizontal rows in the periodic table called? | Socratic

socratic.org/questions/what-are-the-horizontal-rows-in-the-periodic-table-called

The horizontal rows in the periodic table are called periods. The horizontal ... The elements moving from left to right in "periods" have increasing atomic numbers.

What are the horizontal rows of the periodic table called ...

www.reference.com/science/horizontal-rows-periodic-table-called-cd2cb5ee7f3e1355

On the periodic table, the seven horizontal rows are called periods. ... Moving across a period from left to right, the atomic number of the elements increases.

What are the horizontal groupings in the periodic table named

www.answers.com/Q/What_are_the_horizontal_groupings_in_the_periodic_table_named

The horizontal rows in the periodic table are called periods. The vertical columns ... periodic table? Group 0 elements are generally known as the "noble gases".

Chem4Kids.com: Elements & Periodic Table: Periodic Table

www.chem4kids.com/files/elem_pertable.html

Now you know about periods going left to right. The periodic table also has a special name for its vertical columns. Each column is called a group. The elements ...

The Periodic Table: Families and Periods - dummies

www.dummies.com/education/science/chemistry/the-periodic-table-families-and-periods/

In the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families.

Why are rows in the periodic table called periods? - Quora

www.quora.com/Why-are-rows-in-the-periodic-table-called-periods

Well, typically elements put in the same column share a lot of properties and show identical ... What are the horizontal rows in the periodic table called? What are ...

What are the horizontal rows in the periodic table called? - Quora

www.quora.com/What-are-the-horizontal-rows-in-the-periodic-table-called

Aug 12, 2015 ... Horizontal rows in periodic table are called PERIODS. There are 7 periods in the ... Why is it called the periodic table of elements, and not the periodic table of Atoms? Why is it called the periodic table? What is meant by ...

The Periodic Table: Properties of Groups and Periods - Video ...

study.com/academy/lesson/the-periodic-table-properties-of-groups-and-periods.html

The vertical columns on the periodic table are called groups or families. Groups probably come in most handy when predicting the properties of an element.