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the elements are categorised into firstly metals and non metals. metals are on the right and middle and non metals are on the left. Then they are categorised according to reactivity, for example the first column on the far left are all alkali metals, bar helium, which are highly reactive to water and air. Then the next column is of alkali earth metals, which are like alkali metals but are found more naturally are are less reactive.
here's a link to a site that might help because i'm not brilliant at explaining
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What are some ways that elements are arranged on the periodic table of elements?
Mendeleev arranged the elements in a table in the increasing order of atomic masses and repeating periodic properties. In the modern long-form of periodic table, the elements are arranged in the increasing order of atomic number and repeating periodic properties.
In what ways are all elements in a given column of the periodic table similar?
chemistry
Did Arsenic create the first periodic table?
Arsenic did not create the first periodic table. The first periodic table was created by Dmitri Mendeleev, a Russian chemist, in the 1860s. Other scientists had organized elements in other ways prior to the invention of Mendeleev's periodic table, but the other methods were criticized and did not catch on.
Why are water and carbon not on the periodic tsble?
Water (H₂O) and carbon dioxide (CO₂) are not on the periodic table because they are compounds, not elements. The periodic table lists only elements, which are pure substances made up of one type of atom. Water is composed of hydrogen and oxygen atoms, while carbon dioxide consists of carbon and oxygen atoms. Elements can combine in various ways to form compounds, but the periodic table is focused solely on individual elements.
What ways was Mendeleev's periodic table inaccurate compared to the modern periodic table?
Many more elements are known today then when Mendeleev laid out his table. In addition, he arranged his table by atomic mass and there are places in the periodic table where mass does not always increase. An example is between tellurium and iodine.
What do elements in the periodic table do?
The periodic table is just a way of grouping elements according to their atomic numbers. It helps scientists to understand why different elements react in different ways.
What are some ways that elements are arranged on the periodic table of elements?
Mendeleev arranged the elements in a table in the increasing order of atomic masses and repeating periodic properties. In the modern long-form of periodic table, the elements are arranged in the increasing order of atomic number and repeating periodic properties.
What are the different ways the elements in the periodic table are classified?
Periodic table can be classified as:MetalsTransition elementsNon-metalsThey occupy different groups.
In what ways are all elements in a given column of the periodic table similar?
chemistry
What is an arrangement of elements in which are separated into groups based on a set of repeating properties?
Sounds like the Periodic Table of the elements.
What are some unique features of the alternative periodic table?
The alternative periodic table, such as the Janet or Left-Step periodic tables, may have unique features like organizing elements based on electron configurations or emphasizing the relationships between elements in different ways compared to the traditional periodic table.
What was the important work of Dmitri Mendeleev?
He formulated the Periodic Law and revised and predicted the Periodic Table of Elements in some important ways.
What is the arragenment of all the known elements in order of their atomic numbers?
The arrangement of all known elements in order of their atomic numbers is called the periodic table of elements. The periodic table organizes elements based on increasing atomic number, showing similarities in properties and periodic trends across rows and columns.
Did Arsenic create the first periodic table?
Arsenic did not create the first periodic table. The first periodic table was created by Dmitri Mendeleev, a Russian chemist, in the 1860s. Other scientists had organized elements in other ways prior to the invention of Mendeleev's periodic table, but the other methods were criticized and did not catch on.
Do elements in the periodic table have similar qualities?
Elements in the periodic table with similar qualities are grouped together in columns called groups or families. Elements within the same group share similar chemical properties because they have the same number of valence electrons. This allows them to react in similar ways with other elements.
Will the periodic table be change anymore?
Yes, we will forever be adding new elements to the periodic table as we figure out new ways to make them; however, most of what you see now will stay the same.
What are the vertical columns on the periodic table calles?
The vertical columns on the periodic table are called groups. The table is arranged in such a way that all elements in the same group are similar and have the same number of valence electrons.
