[DOC] [TLE] The Periodic Table: Families and Periods - dummies [PAR] 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. [DOC] [TLE] The Periodic Table - Boundless [PAR] The periodic table shows all the elements and their physical properties; it is ... 
The vertical columns (groups) of the periodic table are arranged such that all its ... 
period. A horizontal row in the periodic table, which signifies the total number of... [DOC] [TLE] Periodic properties of the elements - Chem1 [PAR] The periodic table in the form originally published by Dmitri Mendeleev in 1869 
was ... the chemical elements is to make a long a long horizontal list of the 
elements in ... The rows are aligned in such a way that the elements in each 
vertical column ... The first period is split in order to place H above Li and He 
above Ne, thus... [DOC] [TLE] Period (periodic table) - Wikipedia [PAR] A period is one of the horizontal rows in the periodic table, all of whose elements 
have the same number of electron shells. Going across a period, each element 
has one more proton and is less metallic than its predecessor. Arranged this way, 
groups of elements in the same column have similar ... Modern quantum 
mechanics explains these periodic trends in properties in... [DOC] [TLE] What are the horizontal rows in the periodic table called? | Socratic [PAR] The horizontal rows in the periodic table are periods, while the vertical rows are 
called groups. ... These elements (helium, neon, argon, krypton, xenon, radon) all 
have full outer electron shells or 8 ... The periodic table consists of seven rows 
called periods, and 18 columns called groups or families. .... Related questions. [DOC] [TLE] Periodic Properties of the Elements - Chemistry LibreTexts [PAR] Jun 22, 2016 ... The elements in the periodic table are arranged in order of increasing atomic 
number. All of these elements display several other trends and we can use the 
..... Electronegativity is related with ionization energy and electron affinity. .... at 
the top of each column and the periods on the left next to each row. [DOC] [TLE] The Periodic Table: Properties of Groups and Periods - Video ... [PAR] In this lesson, you will be introduced to the periodic table, the road map... ... 
Related Lessons; Related Courses. The Atom .... A period on the periodic table is 
really just a horizontal row. ... The vertical columns on the periodic table are 
called groups or families. ... The vertical groups contain elements with similar 
properties... [DOC] [TLE] What are the horizontal rows of the periodic table called ... [PAR] On the periodic table, the seven horizontal rows are called periods. On the left-
hand side of ... The vertical columns on this table are called groups. Groups are... [DOC] [TLE] The Modern Periodic Table - Genesis [PAR] and columns, which reflects a natural order, the rows of today's tables show 
elements in the ... The modern periodic table of the elements contains 18 groups, 
or vertical columns. ... Each of the table's horizontal rows is called a period. ... All 
of these properties are directly related to the fact that solid metals are crystals 
formed... [DOC] [TLE] The Periodic Table - Infoplease [PAR] Today, the periodic table organizes the elements in horizontal rows, or periods, 
by order ... The elements are also organized in vertical columns, or groups, 
based on ... to atomic number rather than atomic weight, these elements fell into 
place. [DOC] [TLE] Periodic Trends [PAR] These trends can be predicted based on the periods and groups the elements 
are in. Groups are the vertical ... Periods are the horizontal rows on the periodic 
table. Atomic Radius ... This should make sense, because the elements contain 
more protons, neutrons and electrons as you go down the column. Also, the 
number... [DOC] [TLE] Mendeleev's Periodic Table - Corrosion Doctors [PAR] Mendeleev also arranged the elements known at the time in order of relative 
atomic ... properties of elements were related to their atomic mass in a '

Question: The horizontal rows on the periodic table are periods; vertical columns of related elements are these
Answer: groups