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By the periodic table’s logic, all d-block elements should have filled s orbitals. But copper defies that logic. It should have the electron configuration [Ar] 3d 9 4s 2 .
Since Mendeleev's time, scientists have discovered new elements, expanding the periodic table. The most recent additions include nihonium, moscovium, tennessine, and oganesson, which were officially ...
But don’t get too attached to the nomenclature for these elements, formerly known by their respective atomic numbers 113, 115, 117 and 118. The names are on a five-month probation before things ...
It wasn’t always that way. In the old days, scientists got visible, earthy samples of new elements by sifting through exotic minerals. Marie and Pierre Curie boiled down a few thousand pounds of ...
Most Americans surveyed (59 percent) couldn't name more than 10 elements of the 118 that grace the Periodic Table. This may have been a result of the way the question was asked: Americans probably ...
As of 2019, the Periodic Table of the Elements has been around for 150 years. Maybe you've felt a certain chemistry with 2019 but don't know why? Maybe it's because this year marks the 150th ...
You know the periodic table that hung on the wall of every science class you took at school? As of today, it’s wrong. Or more precisely, it's inaccurate.
But when we look at the full gamut of elements in the periodic table, there's one missing that you might have expected to be there: the 43rd one, Technetium, a shiny, gray metal as dense as lead ...
In 1871, a hot-tempered Russian scientist called Dmitri Mendeleev laid out the most effective grouping of chemical elements. These groupings, which allegedly came to Mendeleev in a dream, organize ...
Mendeleev didn't discover the periodic nature of elements by himself—at least five other scientists also suggested that, if you arranged the elements by increasing weight, certain properties ...
Two new elements. We already had a bunch of elements. Some might say we have too many elements, more than we can possibly use regularly. Let’s face it, once you get past 100 elements, you’re ...