As of 2014, there are 118 elements on the periodic chart.91 of these are generally in the list of naturally occurring elements, with atomic numbers 1 to 92. Technetium, element number 43, is radioactive with a very short... More »

On the periodic tables, there are 26 manmade elements that have atomic numbers from 93 to 118. These elements are called transuranic elements because their atomic numbers are higher than 92, which is the atomic number of... More »

As of 2014, "Doodle God", which is available on numerous platforms, has over 300 possible combinations. The original iPhone version of the game contained 115 elements. More »

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The properties of the oxygen family include the fact that, as atomic numbers increase, the elements in the family increase in metal similarity and decrease in electronegativity. All elements in the family exist in a natu... More »

The are 92 naturally occurring atoms, or elements. Two of these elements, Technetium and Promethium, are highly unstable and are sometimes not counted in the total number of natural atoms found on the earth. More »

Helium is a gas that is colorless, odorless and does not react with other elements under normal circumstances. Scientists classify helium as a noble gas. More »

An atom of chromium with no charge has a total of 24 electrons, as indicated by the element's atomic number on the periodic table of elements. The atom also holds 24 protons and 28 neutrons. More »