Search results
- Dictionaryperiodic law
noun
- 1. a law stating that the elements, when listed in order of their atomic numbers, fall into recurring groups, so that elements with similar properties occur at regular intervals.
Powered by Oxford Dictionaries
People also ask
What is a periodic law?
How does the periodic law affect the properties of elements?
What is an example of periodic law?
What does periodic law say about atomic number?
Learn the meaning of periodic law, a law in chemistry that describes the periodic variation of atomic structure and properties of the elements. See the word history, examples, and related entries of periodic law.
Jun 30, 2023 · The periodic law is found to help determine many patterns of many different properties of elements; melting and boiling points, densities, electrical conductivity, reactivity, acidic, basic, valance, polarity, and solubility.
- Importance of Periodic Law
- Discovery of Periodic Law
- Properties Affected by Periodic Law
- GeneratedCaptionsTabForHeroSec
Periodic Law is considered to be one of the most important concepts in chemistry. Every chemist makes use of Periodic Law, whether consciously or not, when dealing with the chemical elements, their properties, and their chemical reactions. Periodic Law led to the development of the modern periodic table.
Periodic Law was formulated based on observations made by scientists in the 19th century. In particular, contributions made by Lothar Meyer and Dmitri Mendeleevmade trends in element properties apparent. They independently proposed Periodic Law in 1869. The periodic table arranged the elements to reflect Periodic Law, even though scientists at the ...
The key properties that follow trends according to Periodic Law are atomic radius, ionic radius, ionization energy, electronegativity, and electron affinity. Atomic and ionic radius are a measure of the size of a single atom or ion. While atomic and ionic radius are different from each other, they follow the same general trend. The radius increases...
Periodic Law states that the properties of elements recur in a systematic way when arranged by atomic number. Learn how Periodic Law was discovered, what properties it affects, and how it led to the modern periodic table.
- Anne Marie Helmenstine, Ph.D.
The development of various atomic models and advances in quantum theory revealed that the atomic number is the most basic property of a chemical element. This led to the modification of Mendeleev’s periodic law, which is today called as modern periodic law. Check ⇒ History of Periodic Table.
- 10 min
- In 1869, Dmitri Mendeleev and Lothar Meyer established the periodic law independently. The first periodic table was developed by Mendeleev and soon...
- Periodic law is recognized as one of chemistry’s most important concepts. While dealing with the chemical elements, their properties, and their che...
- Periodic trends are common patterns in the periodic table showing us the various aspects of an element such as electronegativity, atomic radius, or...
- Generally, nuclear mass decreases from left to right and always increases from top to bottom. As the atomic number has been developed as the basis...
- In a given period, the valence shell electronic configuration of any two elements is not the same. Because of this, elements throughout time have d...
Periodic table, in chemistry, the organized array of all the chemical elements in order of increasing atomic number. When the elements are thus arranged, there is a recurring pattern called the ‘periodic law’ in their properties, in which elements in the same column (group) have similar properties.
- The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen...
- The groups of the periodic table are displayed as vertical columns numbered from 1 to 18. The elements in a group have very similar chemical proper...
- The arrangement of the elements in the periodic table comes from the electronic configuration of the elements. Because of the Pauli exclusion princ...
- The periodic table has two rows at the bottom that are usually split out from the main body of the table. These rows contain elements in the lantha...
Jun 18, 2020 · What is the “periodic law”? What do the vertical columns (groups) in the periodic table represent? Mendeleev and Moseley are credited with being most responsible for the modern periodic law. The result is the periodic table as we know it today.
the law that the properties of the elements are periodic functions of their atomic numbers. Also called Mendeleev's law. (originally) the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights.
