Like the lanthanides, the actinides form a family of elements with similar properties.

The second column from the right side of the periodic table, group 17, is the halogen family of elements.

Compare similarities in properties both between and within families of elements to similarities in their atomic structure.

But Mendeleev was astonished, as everyone was, by the discovery in the 1890's of an entire new family of elements, the inert gases.

We show that although Emigrant is closely related to the pogo-like family of elements, Stowaway may represent a novel family.

It is easier to remember the properties of more than 90 naturally occuring elements if we can group them into families of elements with similar properties.

I introduced the notions of nuclear cone, isotone projection cone, the conditions (s)1+ and the notation of exceptional family of elements for a function.

The PstI family of elements are short, highly repetitive DNA sequences interspersed throughout the genome of the Bovidae.

It states that for every indexed family of nonempty sets there exists an indexed family of elements such that for every .

Increasing Demand for Palladium Palladium and platinum belong to a family of elements, called the platinum group elements (PGEs).

Every finite bounded lattice is complete since the meet or join of any family of elements can always be reduced to a meet or join of two elements.

Halogens (Group 7), Alkali Metals (Group 1) Halogens The name given to the family of elements in Group 7 of the Periodic Table.

However, when this entire family of elements was discovered, Sir William Ramsay was able to add them to the table as Group 0, without the basic concept of the periodic table being disturbed.

He is known for constructing one of the first known infinite families of elements in the stable homotopy groups of spheres by showing that the classes survive the Adams spectral sequence for .

With the right electrode and the right voltage, uranium will migrate to the electrode, along with plutonium, neptunium and lawrencium, the so-called transuranic family of elements found at the bottom of the atomic chart.

One could read the table up and down, going from one group to another (each vertical group was a family of elements with similar reactivity and valency) - this was what Dobereiner and the pre-1860 chemists would have done.

Formally, an indexed family is the same thing as a mathematical function; a function with domain J and codomain X is equivalent to a family of elements of X indexed by elements of J.

Every Heyting algebra is isomorphic to one of the form H. To see this, let H be any Heyting algebra, and let 〈a: i I〉 be a family of elements generating H (for example, any surjective family).