Because the table repeats itself according to similar chemical properties (i.e. those elements with 5 valence electrons all behave similarly to each other, thus they are in the same column), the properties of the elements periodically repeat themselves as the number of valence electrons (those in the s and p shells) reach 8 and a new valence shell begins.
Because chemical properties periodically recur. That is, lithium has certain chemical properties, and 8 elements later is sodium, which has similar properties, and 8 elements after that is potassium, which again has similar properties. (It's not always 8; the next similar element is rubidium, which doesn't occur until 18 elements later, so it might better be called the "semi-periodic table of elements.")
Because the Periodic Table is a classification of elements arising from Mendeleev's "Periodic Law" -- If the elements are arranged in order of increasing atomic weight, then there will be a periodic repetition of properties. Apart from a modification arising from Moseley's work in 1913, requiring the law to be based on atomic number rather than atomic weight, this has stood as the central law of the chemistry of the elements for 140 years.
The way the elements are sorted are by block and period. Hence periodic.
it is used because periodic means recurring in a pattern or order. The elements are put into order of mass.
The periodic table can be used to describe atomic structure by using the period to tell you how many shells (principle quantum number) there are in an element, and the group number can be used to tell you the number of valence electrons in the outermost shell.
The chemical abbreviation for mercury, used in the Periodic Table and throughout chemistry, is Hg.
How have chemists used the Periodic Table over time
"H" stands for Hydrogen on the periodic table.
Masurium -- Disputed claim to discovery of technetium -- it's not currently used in the periodic table. It was either formerly used or was suggested for future use.
The group number is an identifier used to describe the column of the standard Periodic Table in which the element appears.
The horizontal rows are called Periods. There are 7 periods in periodic table.
periodic table of elements
families
The periodic table can be used to describe atomic structure by using the period to tell you how many shells (principle quantum number) there are in an element, and the group number can be used to tell you the number of valence electrons in the outermost shell.
the periodic table has no compounds it is a table of elements.
The "Periodic Table of Elements" is used for classifying the elements, and to know which one is which.
Periodic Table is expressed as rows and columns. It is used by locating the position of element.
Periodic table is expressed as rows and columns. It is used by locating the position of element.
The term used in Groups. It is sometimes called Family.
The term used is group. It is also called family.
Is the periodic table used for Math teachers?