Group 9, by modern IUPAC numbering, is a group (column) of chemical elements in the d-block of the periodic table. Members of Group 9 include cobalt (Co)...

of the early transition metal groups, where the lightest element is distinct from the very similar next two. All the group 3 elements are rather soft, silvery-white...

Group 9 may refer to: Group 9 element Group 9 Rugby League "Group 9", Australian arts collective, whose members included John Dowie This disambiguation...

which is group 18 (current IUPAC), the noble gases. In the older group naming systems, this group was combined with groups 9 and 10 and called group "VIIIB"...

chemists then correctly assumed that it was the ore of a distinct new element, named molybdenum for the mineral in which it was discovered. Peter Jacob...

Eu2+ and Eu3+. Yttrium is grouped as a heavy rare-earth element due to chemical similarities. The break between the two groups is sometimes put elsewhere...

became the common name. The heaviest known group 12 element, copernicium, was first created on February 9, 1996, at the Gesellschaft für Schwerionenforschung...

naturally in ores, and it is the earth's 22nd most abundant element. Two prominent groups of ores from which it can be extracted are laterites and sulfide...

which each group suggesting its own name: the Dubna group named the element kurchatovium after Igor Kurchatov, while the Berkeley group named it rutherfordium...

order. Silver is also the most thermally conductive element, and the most light reflecting element. Silver also has the unusual property that the tarnish...

Sulfur has been known since antiquity, and oxygen was recognized as an element in the 18th century. Selenium, tellurium and polonium were discovered in...

resulting in trends in chemical behavior. This group has a defining characteristic whereby each component element has 5 electrons in its valence shell, that...

three Group 5 elements occur naturally and share similar properties; all three are hard refractory metals under standard conditions. The fourth element, dubnium...

Rhodium is a group 9 element (cobalt group). Rhodium is found in platinum or nickel ores with the other members of the platinum group metals. It was...

Extended periodic table Element 119 (Uue, marked here) in period 8 (row 8) marks the start of theorisations. An extended periodic table theorizes about...

fairly common element, whereas rhenium is rare, technetium only occurs in trace quantities, and bohrium is entirely synthetic. The trends in group 7 follow...

generating set of a group is a subset of the group set such that every element of the group can be expressed as a combination (under the group operation) of...

to have discovered element 85 in minerals, and called the element dakine, but he was also mistaken. An attempt at discovering element 85 in 1939 by Horia...

referred to as the triels. Several group 13 elements have biological roles in the ecosystem. Boron is a trace element in humans and is essential for some...

thorium, or uranium compounds. The seventh member of group 18 is oganesson, an unstable synthetic element whose chemistry is still uncertain because only five...

points of the carbon group tend to get lower with the heavier elements. At standard pressure, carbon, the lightest carbon group element, sublimes at 3825 °C...

every other element of the group may be obtained by repeatedly applying the group operation to g {\displaystyle g} or its inverse. Each element can be written...

has an identity element, and every element of the set has an inverse element. Many mathematical structures are groups endowed with other properties. For...

been conducted to attempt the synthesis of element 119, which is likely to be the next member of the group; none were successful. However, ununennium...

his name. KAJ considers humour, rather than dialect, to be the central element of their creative work. They emphasise linguistic playfulness and relatability...

transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are...

which is a Casimir element of the three-dimensional rotation group. More generally, Casimir elements can be used to refer to any element of the center of...

applications in the human body; hemoglobin is partly iron. Cobalt (Co) is an element in group 9. Cobalt is commonly used in pigments, as many compounds of cobalt...

Mercury is a chemical element; it has symbol Hg and atomic number 80. It is commonly known as quicksilver. A heavy, silvery d-block element, mercury is the...

algebra, a unit or invertible element of a ring is an invertible element for the multiplication of the ring. That is, an element u of a ring R is a unit if...