LAnthanides and actinides
There are 7 periods in the modern periodic table.
sodium potassium calcium iron
because your but is harry you fat slob
Astatine is in the group 17 and period 6 of the periodic table of Mendeleev.
Numerous forms of Periodic Table have been devised from time to time. Some forms emphasise chemical reactions and valence, whereas others stress the electronic configuration of elements. A modern version the so called long form of the periodic tableof the elements, is the most convenient and widely used.
There are 7 periods in the modern periodic table.
7
On the periodic table, in the human body or in industry; be more specific.
sodium potassium calcium iron
yes. calcium phosporous
about one third of the periodic table, but the most common are:carbonhydrogennitrogenoxygen
because your but is harry you fat slob
Astatine is in the group 17 and period 6 of the periodic table of Mendeleev.
Numerous forms of Periodic Table have been devised from time to time. Some forms emphasise chemical reactions and valence, whereas others stress the electronic configuration of elements. A modern version the so called long form of the periodic tableof the elements, is the most convenient and widely used.
The periodic table is a tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and chemical properties. Elements are presented in increasing atomic number. The main body of the table is a 18 × 7 grid, and elements with the same number of valence electrons are kept together in groups, such as the halogens and the noble gases. There are four distinct rectangular areas or blocks. The f-block is usually not included in the main table, but rather is floated below, as an inline f-block would often make the table impractically wide. Using periodic trends, the periodic table can help predict the properties of various elements and the relations between properties. As a result, it provides a useful framework for analyzing chemical behavior, and is widely used in chemistry and other sciences.
A periodic table is a tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements are presented in order of increasing atomic number.The standard form of table comprises an 18 × 7 grid or main body of elements, positioned above a smaller double row of elements. The table can also be deconstructed into four rectangular blocks: the s-block to the left, the f-block to the south, the d-block in the centre, and the p-block on the right. Most of the columns and rows of the table have specific names: main body columns are called groups (such as the halogens or the noble gases); horizontal rows are called periods. Using periodic (recurring) trends, the periodic table can help predict the properties of various elements and the relationships between properties. As a result it provides a useful framework for analyzing chemical behavior, and is widely used in chemistry and other sciences.
There are nine:Alkali Metals MetalloidsNon-Metals Rare Earth Elements Halogens Noble Gases Alkaline Earth Elements Transition Metals Other MetalsThe traditional periodic table has 18 families, also known as groups.Alkali MetalsMetalloidsNon-MetalsRare Earth ElementsHalogensNoble GasesAlkaline Earth ElementsTransition MetalsOther Metals