Welcome to the detailed analysis for periodni.com. This domain is officially recognized as EniG. Periodic Table of the Elements, Calculators, and Printable Materials. According to their official web presence, their primary focus is: "Everything for chemists: from the periodic system in online and PDF versions, to online calculators and free software for chemists. English-Croatian chemistry dictionary and glossary is always at hand.".
"Relative atomic masses are expressed with five significant figures. For elements that have no stable nuclides, the value enclosed in brackets indicates the mass number of the longest-lived isotope of the element. However four such elements (bismuth, thorium, protactinium and uranium) do have a characteristic terrestrial isotopic composition, and for these an atomic weight is tabulated (Atomic Weights of the Elements 2013, Pure Appl. Chem., Vol. 88, No. 3, (2016) 265-291)"
"Organization of chemical elements in alphabetical order by their names (or symbols) doesn't tell us anything about their properties but it is useful when searching for an element. We can list elements in order of increasing atomic number but it wouldn't be a periodic table any more. The periodic table is a chart that organizes the elements by increasing atomic number and their chemical and physical properties (see article History of the Periodic table of elements). Rows are arranged so that elements with similar properties fall into the same vertical columns ("groups")."
"The lanthanides and actinides should actually be placed in the middle of the table as well, after lanthanum and actinium, but, because of their similarity to each other, they are removed from the middle to save space."
"On periodni.com you can find two version of the periodic table"
By comparing periodni.com to other leading websites in its niche, marketers and researchers can identify key traffic sources and growth opportunities. Explore our related resources below to find websites similar to periodni.com.
Yes, according to our latest analysis, we detected a valid SSL certificate ensuring a secure connection.
As of September 6, 2026, periodni.com holds an estimated domain authority score of 83/100 based on our VisitRank tracking algorithms.
You can find the best alternatives and similar sites to periodni.com in our explore section, which includes competitors in the News & Media sector.
Common Misspellings & Typo Domains for periodni.com: