Transition metals are the elements of the 10 columns in groups 3 through 12. They can be found at the center of the periodic table, in the shorter columns between the eight tall columns of the main group elements. Transition Metals: Definition For an element to be considered a transition me...
atomic mass, atomic weight, relative atomic mass - (chemistry) the mass of an atom of a chemical element expressed in atomic mass units molecular weight, relative molecular mass - (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule valence, valency - (che...
That is, all living material includes carbon, and carbon creates the building blocks of life. Organic compounds include carbon as the main element. There are four main types of organic compounds in human function: carbohydrates, lipids, proteins, and nucleic acids. These organic compounds help ...
transition element noun ,Chemistry. any element in any of the series of elements with atomic numbers 21–29, 39–47, 57–79, and 89–107, that in a given inner orbital has less than a full quota of electrons. Discover More Word History and Origins...
(used to indicate transition from one state to another): to break in half. (used to indicate object or purpose): speaking in honor of the event. adverb in or into some place, position, state, relation, etc.: Please come in. on the inside; within. ...
Energy is treated in a number of articles. For the development of the concept of energy and the principle of energy conservation, see principles of physical science; mechanics; thermodynamics; and conservation of energy. For the major sources of energy and the mechanisms by which the transition ...
Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons. A bond forms when the bonded atoms have
the bottom of a group to the top (although this does not apply to the transition metals) and left to right across aperiod Negative Ions The most electronegativeelementis fluorine, followed by oxygen, chlorine and nitrogen. Atoms with high electronegativity tend to form negative ions. ...
(also transition element)(chemistry) one of the group of metals in the centre of the periodic table (= a list of all the chemical elements) that form coloured compounds and often act as catalysts (= substances that make chemical reactions happen faster) Take your English to the next ...
changeover,conversion,transition- an event that results in a transformation retrogression,degeneration- passing from a more complex to a simpler biological form strengthening- becoming stronger weakening- becoming weaker 3.transmutation- (physics) the change of one chemical element into another (as by nu...