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.
The periodic table is a tabular arrangement of the chemical elements, ordered by
their atomic number ... The rows of the table are called periods; the columns are
called groups. ..... A group or fam...
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.
The horizontal rows in the periodic table are called periods. ... The elements
moving from left to right in "periods" have increasing atomic numbers. These
Aug 12, 2015 ... Horizontal rows in periodic table are called PERIODS. There are 7 ... Periodic
Table: Why are group 7A elements called halogens? Periodic ...
The horizontal rows in the periodic table are called periods. The vertical ... Are
another name for the horizontal rows on the periodic table of elements? Periods.
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.
Notice how the elements are arranged on the periodic table in ... There is a
special name given to the horizontal rows on the periodic table. ... first row, the
one containing hydrogen and helium, is called the first period.
Explain why elements in a group have similar properties. 2. Identify the ... Our
current periodic table lists 109 elements. ... The horizontal rows are called
All periodic tables also contain the chemical symbols for each element. These
symbols are ... Horizontal rows of the periodic table are called periods. Horizontal