The Russian chemist Dmitri Mendeleev was the first scientist to make a periodic table similar to the one used today. Mendeleev arranged the elements by atomic mass, corresponding to relative molar mass.
Hereof, how is the periodic table of the elements arranged?
Periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus. Explanation of the periodic table.
What is the modern periodic table arranged according to?
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
What scientists contributed to the periodic table?
Development of the periodic table
- Alexandre-Emile Béguyer de Chancourtois. Alexandre-Emile Béguyer de Chancourtois. Alexandre Béguyer de Chancourtois.
- John Newlands. John Newlands. John Newlands.
- Julius Lothar Meyer. Julius Lothar Meyer. Julius Lothar Meyer .
- Dmitri Mendeleev. Dmitri Mendeleev. Dmitri Mendeleev.
- Henry Moseley. Henry Moseley. Henry Moseley.