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How did chemists begin the process of organizing elements?

Chemists began organizing elements by noticing patterns in their properties. Dmitri Mendeleev created the first periodic table in the 1860s by arranging elements in order of increasing atomic weight and grouping elements with similar properties together. This laid the foundation for the modern periodic table.


What are the empty spaces in the periodic table meant for?

It was recognized by the inventor of the Periodic table that these empty spaces are for elements/isotopes that would be discovered someday. Dmitri Mendeleev is generally credited with the publication, in 1869, of the first widely recognized periodic table. He developed his table to illustrate periodic trends in the properties of the then-known elements. Mendeleev also predicted some properties of then-unknown elements that would be expected to fill gaps in this table.


When did Dmitri Mendeleev begin his work?

Mendeleev published the periodic table in 1869.


How did errors in the Mendeleev periodic table begin to show up?

When it was discovered that Mendeleev's table was based on the wrong characteristic. He believed that it was the mass of the elements that affected their properties. It is, in fact, their atomic numbers


What are the names of all the elements that start with the letter w?

There are no chemical elements that begin with the letter w. There are chemical elements that begin with all letters except J, Q and W.


What are some of the elements that start with Q?

No chemical elements begin with the letter Q.


What elements starts with the letter j?

There are no chemical elements that begin with the letter J.


What are some chemicals that begin with the letter A?

Aluminum and Arsenic are chemical elements. They begin with the letter A.


What are some elements that begin with the letter U?

Uranium


What elements begin with the letter c?

Total Twelve Elements's names are started with the letter CCadmiumCalciumCaliforniumCarbonCeriumCesiumChlorineChromiumCobaltCoperniciumCopperCurium


Are there any elements that start with O?

Oxygen and osmium are chemical elements. They begin with the letter O.


How do physical properties differ as you move across a period or down a group?

Moving down a group, the elements will have the same number if valence electrons. Tis will give them similar properties, such as the Noble Gases, or the extreme reactivity of Group I metals. Moving across a period, elements will begin to resemble each other less and share fewer properties the further apart they are in the row.