ARTICLES

The modern periodic table is arranged in ascending order according to atomic number. An element's atomic number is equal to the number of protons in each atom. Within this order, elements are arranged into distinct group...

www.reference.com/science/modern-periodic-table-arranged-35d8797115c66ba

In the modern periodic table, elements are arranged by atomic number. They are placed with the lowest atomic number first, and elements with increasing atomic numbers run to the right. They are also arranged in vertical ...

www.reference.com/science/elements-arranged-modern-periodic-table-474e4403f2c39d52

The modern periodic table is based upon the atomic number and the physical properties of each element. The periods, or rows, are arranged by increasing atomic number. Each column, or group, of elements has similar physic...

www.reference.com/article/two-properties-modern-periodic-table-based-ceb8d12854d3b0bf

SIMILAR ARTICLES

The modern periodic table is based upon the atomic number and the physical properties of each element. The periods, or rows, are arranged by increasing atomic number. Each column, or group, of elements has similar physic...

www.reference.com/article/two-properties-modern-periodic-table-based-ceb8d12854d3b0bf

Henry Moseley's discovery of the atomic number refined the way elements are listed in the periodic table. Prior to his discovery, the elements were listed by atomic mass. Chemists considered the atomic numbers to be some...

www.reference.com/science/contribution-did-henry-moseley-make-periodic-table-2d189a9e61c5ef35

"Rn" stands for radon in the periodic table. Radon's atomic number is 86, and its atomic weight is 222. Radon was originally called niton when it was discovered in 1900.

www.reference.com/article/rn-stand-periodic-table-fd916b113250f5e7

The periodic table was invented by chemist Dmitri Mendeleev to organize and compare elements and understand their relations with each other. Mendeleev created the periodic table between 1868 and 1870 while writing his bo...

www.reference.com/science/periodic-table-invented-2970ade75d1d73b0