Describe and explain the periodic trends of the period 3 elements Na - Ar

Describe and explain the periodic trends of the period 3 elements Na - Ar Properties of the elements of period 3 (Na - Ar) to illustrate the periodic trendsWhat is periodicity?Periodicity is the repeating pattern in which the elements are arranged in the periodic table, these are some of the trends shown from looking at the periodicity of the elements.Atomic radiusAn atom doesn't have a fixed radius. The radius of an atom can only be found by measuring the distance between the nuclei of two touching atoms, and then halving that distance. Atomic radius is measured in nm.The graph shows that atomic radius decreases across a period (from left to right). This is because the number of protons in the nucleus increases so the nuclear charge increases. The force of attraction between the nucleus and the electrons increases so the electrons are drawn more tightly to the nucleus so the size of the atom (and the atomic nucleus) decreases.chart of atomic radius versus atomic number (not c...The atomic radius of Argon cannot be measured because it is a noble gas so doe sn't form bonds.First Ionisation energyThe first ionisation energy is the energy required to remove the most loosely held electron from one mole of gaseous atoms to produce 1 mole of gaseous singly charged positive ions. Ionisation energy is measured in Kjmol.M(g) - M+(g) + e-First ionisation energy increases across a period because going across the period the number of protons in the nucleus increases so the nuclear charge in each element increases therefore the force of attraction between the nucleus and outer electron is increased, and there is a negligible increase in shielding because each successive electron enters the same energy level so more energy is needed to remove the outer electron.Some anomalies occur in this graph and other graphs of first ionisation energy. The Anomaly in this graph...

Herrmann Last Name Meaning and Family History

Herrmann Last Name Meaning and Family History The German Herrmann is a patronymic surname which means soldier, army man, or warrior derived from the Germanic elements heri, meaning army, and mann, meaning man. Harmon and Hermon are common English variants of this surname. Alternate Surname Spellings:  Herrman, Hermann, Herman Famous People With the Herrmann Surname Bernard Herrmann  - American composer  best known as the author of scores for Orson Welles and Alfred Hitchcock films including Citizen Kane and PsychoAlexander Herrmann  - French magician known as Herrmann the GreatHans Herrmann -  Ã‚  Former Formula One driver from Stuttgart, GermanyEdward Herrmann - American actor, best known for his role as the patriarch, Richard, on Gilmore Girls  Jakob Hermann - Swiss mathematicianWalter Herrmann - German nuclear physicist Where Is the Herrmann Name Most Common? According to Forebears, the  Herrmann surname can be traced back to Brandenburg, and is still most commonly found in Germany, ranking as the countrys 38th most common surname. It is also somewhat common in Switzerland, Austria, and Luxembourg. Data from  WorldNames PublicProfiler  indicates the Herrmann surname is equally prevalent throughout much of Germany, with a slightly higher incidence around Saarland and Sachsen. Surname maps from MyHeritage.de indicate the Hermann  last name is focused in scattered pockets around Germany and is most common in the counties and cities of Berlin, Munich, Hamburg, Region Hannover, Ortenaukreis, Reutlingen, Dresden, Rhein-Neckar-Kreis, Leipzig, and Saarlouis. Family Crest or Coat of Arms Contrary to what you may hear, there is no such thing as a Herrmann family crest or coat of arms for the Herrmann surname.  Coats of arms are granted to individuals, not families, and may rightfully be used only by the uninterrupted male line descendants of the person to whom the coat of arms was originally granted. Genealogy Resources Meanings of Common German Surnames - Uncover the meaning of your last name with this free guide to the meanings and origins of common German surnames.Harmon/Harman/Herman  DNA  Surname Project - Individuals with the Harmon  surname, and variations such as  Herman, Herrmann, Herrman, Harman and Herman, are invited to participate in this group DNA project in an attempt to learn more about their family origins. The website includes information on the project, the research done to date, and instructions on how to participate.HERRMANN  Family Genealogy Forum - This free message board is focused on descendants of Herrmann ancestors around the world. Search or browse the archives for information on your ancestors, or join the group and post your own Herrmann query.FamilySearch - HERRMANN  Genealogy - Explore over 2.4 million results from digitized  historical records and lineage-linked family trees related to the Herrmann surname on this free website hosted by the Church of Je sus Christ of Latter-day Saints. GeneaNet - Herrmann  Records - GeneaNet includes archival records, family trees, and other resources, with a concentration on records and families from France and other European countries. Sources Cottle, Basil.  Penguin Dictionary of Surnames. Baltimore, MD: Penguin Books, 1967.Dorward, David.  Scottish Surnames. Collins Celtic (Pocket edition), 1998.Fucilla, Joseph.  Our Italian Surnames. Genealogical Publishing Company, 2003.Hanks, Patrick and Flavia Hodges.  A Dictionary of Surnames. Oxford University Press, 1989.Hanks, Patrick.  Dictionary of American Family Names. Oxford University Press, 2003.Reaney, P.H.  A Dictionary of English Surnames. Oxford University Press, 1997.Smith, Elsdon C.  American Surnames. Genealogical Publishing Company, 1997. https://www.thoughtco.com/surname-meanings-and-origins-s2-1422408