
	Where results make sense

Topic: Period 3 element

Related Topics

Period 8 element

Period 1 element

Periodic table period

Period 2 element

Period 5 element

Period 4 element

Period 7 element

Period 6 element

Periodic table

Group 12 element

Group 3 element

Group 5 element

Group 4 element

Group 7 element

Chemical series

In the News (Tue 24 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Chemistry: WebElements Periodic Table
		The periodic "law" of chemistry recognises that many properties of the chemical elements are periodic functions of their atomic number (the number of protons within the element's atomic nucleus).
		The periodic table is an arrangement of the chemical elements ordered by atomic number in columns (groups) and rows (periods) presented so as to emphasize their periodic properties.
		The element polonium is very much in the news at present, perhaps for the first time ever, and for the wrong reasons.
	www.webelements.com (426 words)

	Redox Reactions
		So far we have considered that all elements in positive oxidation states begin their existance in water as hydrated cations and then undergo reactions between the cations and the water to "neutralize" their positive charge.
		In a given family, the group oxidation number is least stable at the top of the family (second Period) and at the bottom of the family (sixth Period).
		The trends across a Period are the same as in the p-Block Elements while the trends dow a family are different.
	www.wou.edu /las/physci/ch412/redox.htm (827 words)

	Encyclopedia: Period 3 element (Site not responding. Last check: )
		A Group 4 element is an element in periodic table group 4 (IUPAC style) in the periodic table, which consists of: titanium (22) zirconium (40) hafnium (72) rutherfordium (104) All of these elements are classed in Group 4 because their valence shell holds four electrons.
		A period 1 element is one of the chemical elements in the first row (or period) of the periodic table of the elements.
		Periodic tables The periodic table of the chemical elements, also called the Mendeleev periodic table, is a tabular display of the known chemical elements.
	www.nationmaster.com /encyclopedia/Period-3-element (3012 words)

	wiki/Period 4 element Definition / wiki/Period 4 element Research (Site not responding. Last check: )
		A period 4 element is one of the chemical elementsA chemical element, often called simply element, is a substance that cannot be divided or changed into different substances by ordinary chemical methods.
		KPotassium is a chemical element in the periodic table that has the symbol K (L. kalium) and atomic number 19.
		CoCobalt is a chemical element in the periodic table that has the symbol Co and atomic number 27.
	www.elresearch.com /wiki/Period_4_element (1218 words)

	Trends Across Period 3 of the Periodic Table
		As one moves from one element to another on the right, one more proton is found in the nucleus, and one more electron is found in the same electron 'shell' (energy level).
		For this reason, all the elements in Period 3 have the first electron 'shell' (energy level) filled with 2 electrons and the second electron 'shell' (energy level) filled with 8 electrons (the electronic configuration of Neon).
		Elements to the left of Period 3 exhibit metallic properties, elements to the right show non-metallic properties.
	www.ausetute.com.au /trendpd3.html (479 words)

	Period 3 element - Wikipedia, the free encyclopedia
		A period 3 element is one of the chemical elements in the third row (or period) of the periodic table of the elements.
		Groups: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
		Periods: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9
	en.wikipedia.org /wiki/Period_3_element (178 words)

	Periodic table period - Wikipedia, the free encyclopedia
		Since the outermost electrons determine chemical properties, those tend to be similar within periodic table groups.
		Elements adjacent to one another within a group have similar physical properties, despite their significant differences in mass.
		Elements adjacent to one another within a period have similar mass but different properties.
	www.wikipedia.org /wiki/Periodic_table_period (241 words)

	Group 3 element - Wikipedia, the free encyclopedia
		A Group 3 element is the series of elements in group 3 (IUPAC style) of the periodic table, which consists of
		All of these elements are classed in Group 3 because their outer shell holds three electrons.
		Scandium, yttrium, and the lanthanides (except promethium) can all be found naturally, albeit at very low levels in the Earth's crust, and are collectively called rare-earth metals.
	www.wikipedia.org /wiki/Group_3 (297 words)

	Period 6 element -- Facts, Info, and Encyclopedia article (Site not responding. Last check: )
		(A yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium) Nd
		(A gray lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite) Sm
		(A soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime) Tm
	www.absoluteastronomy.com /encyclopedia/p/pe/period_6_element.htm (1033 words)

	BBC - 16+ SOS Teacher - Chemistry Laboratory Chemistry period 3 of the periodic table (Site not responding. Last check: )
		Elements to the left-hand side have a small number of electrons in their outer orbital.
		For this reason elements to the right hand side of the Periodic Table are insulators, and the elements phosphorus, sulphur and chlorine are covalently bonded, with low conductivity.
		In general, the metallic character of an element increases towards the lower left-hand corner of the Periodic Table, due the increasing ease of ionisation of outer shell electrons.
	212.58.224.55 /schools/16/sosteacher/chemistry/50196.shtml (380 words)

	Sodium: Elements
		Group 1 elements are often referred to as the "alkali metals".
		Sodium is the fourth most abundant element on earth, comprising about 2.6% of the earth's crust; it is the most abundant of the alkali group of metals.
		Sodium is relatively abundant in stars and the D spectral lines of this element are among the most prominent in star light.
	www.lycos.com /info/sodium--elements.html (186 words)

	Period 4 element -- Facts, Info, and Encyclopedia article (Site not responding. Last check: )
		(A brittle gray crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors; occurs in germanite and argyrodite) Ge
		(A toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)) Se
		(A colorless element that is one of the six inert gasses; occurs in trace amounts in air) Kr
	www.absoluteastronomy.com /encyclopedia/p/pe/period_4_element.htm (896 words)

	Encyclopedia: Period 8 element (Site not responding. Last check: )
		A period 8 element is one of the chemical elements in the eighth row (or period) of the periodic table of the elements.
		None of these elements has yet been created, but the names ununennium and unbinilium have been assigned as placeholders for the first two.
		Predicted properties Name, Symbol, Number Unbinilium, Ubn, 120 Chemical series Presumably Alkali earths Group, Period, Block 2, 8, s Appearance unknown, probably metallic and silvery white or grey colour Atomic weight [297] amu (a guess) Electron configuration Uuo 8s2 (a guess based upon barium and radium) e- s per energy...
	www.nationmaster.com /encyclopedia/Period-8-element (2176 words)

	GCSE Periodic Table Notes at Doc Brown's Chemistry Clinic. btptwpb wpbchemhelp
		This is not correct for some elements now that we know their detailed atomic structure (detailed GCSE notes) in terms of protons, neutrons and electrons, and of course, their chemical and physical properties.
		A Period is a horizontal row of elements with a variety of properties, changing from very metallic elements on the left to non-metallic elements on the right.
		Period 2 starts with a solid low melting reactive metal lithium, in the middle there are the high melting and rather unreactive non-metals boron and carbon, next to the end is the very highly reactive non-metal gas fluorine, and the period finishes with the very unreactive gas neon.
	www.wpbschoolhouse.btinternet.co.uk /page03/3_34ptable.htm (3420 words)

	element (Site not responding. Last check: )
		The word element comes from the Latin word elementum meaning "the basic parts that are the foundations of something".
		The classical elements were believed for a long time (by the pythagoreans and alchemists for example) to be the building blocks of all matter in the universe, see: classical element
		In electronics, an element is any device (such as an inductor, resistor, capacitor, conductor, line, or cathode ray tube) with terminals at which it may be connected directly with other devices.
	www.fact-library.com /element.html (279 words)

	[No title]
		Notes: Many elements of this structure are directly taken from the DTD for the Integrated Taxonomic Information System, Canadian node (ITIS*ca) at: http://sis.agr.gc.ca/itis/ which was provided by Derek Munro.
		Element that allows the recording of the latitude and longitude of a recording or collecting position.
		Although this could be covered by a generic element for site measurements, the separate element is preserved for the sake of clarity.
	www.bgbm.fu-berlin.de /tdwg/CODATA/schema/ABCD_1.30/ABCD-1.30.XSD (3696 words)

	Periodic table period -- Facts, Info, and Encyclopedia article (Site not responding. Last check: )
		In the (Click link for more info and facts about periodic table of the elements) periodic table of the elements, a period is a row of the table.
		Each shell is divided into different subshells, which as (The order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element) atomic number increases are filled in roughly this order:
		Since the outermost electrons determine chemical properties, those tend to be similar within (Click link for more info and facts about periodic table group) periodic table groups.
	www.absoluteastronomy.com /encyclopedia/P/Pe/Periodic_table_period.htm (268 words)

	It's Elemental - The Element Lutetium
		Marignac believed that ytterbia was a compound of a new element, which he named ytterbium.
		Urbain was eventually credited with the discovery of the elements and won the right to name them, although chemists later changed the name neoytterbium back to ytterbium and changed the spelling of lutecium to lutetium.
		Lutetium is one of the most difficult elements to prepare and has no large scale practical uses, although some of its radioactive isotopes can be used as a catalyst in the cracking of petroleum products and a catalyst in some hydrogenation and polymerization processes.
	education.jlab.org /itselemental/ele071.html (369 words)

	ISO 639-3 Registration Authority - SIL International
		This is the home page for Part 3 of the ISO 639 family of standards, Codes for the representation of names of languages.
		The Review period for requested changes to the ISO 639-3 Code Set for 2007 has begun and will remain open until 17 December 2007.
		A past change request may be found through its change request number, as in http://www.sil.org/iso639-3/chg_detail.asp?id=2006-001 or through the documentation page of an affected code element, as in http://www.sil.org/iso639-3/documentation.asp?id=bvs.
	www.sil.org /iso639-3 (463 words)

	Creative Chemistry - Trend in electrical conductivity of Period 3 elements
		For an element to conduct electricity, it must contain electrons that are free to move.
		Silicon is a metalloid (an element with some of the properties of metals and some of the properties of non-metals).
		It has a giant lattice structure similar to that of diamond, in which each silicon atom is covalently-bonded to four other silicon atoms in a tetrahedral arrangement.
	www.creative-chemistry.org.uk /alevel/module1/trends9.htm (326 words)

	MEDIEVAL PHILOSOPHY: The Scholastic Period - Page 3
		Prime matter as such can exist; moreover, matter is a constitutive element of every being, even of those of spiritual nature, such as the angels.
		The principle of individuation, instead of being matter, as Thomas Aquinas taught, is form, in the opinion of Scotus.
		Scholastic philosophy, in its laborious ascent to Thomas Aquinas and Duns Scotus, utilized the best elements of Greek and Patristic philosophy, and succeeded in constructing a weighty metaphysics, in which a rational solution is found to the two problems at the basis of philosophy as well as theology: God and man.
	www.radicalacademy.com /adiphilscholastic3.htm (2415 words)

	DocBook Element Reference
		Excluded elements cannot appear anywhere inside the element that excludes them, even in places that are ordinarily valid.
		The ampersand is a kind of combination of alternative and sequence, which means that all of the elements must occur, but they can occur in any order.
		In practical terms, match means that it must be possible to expand the content model until it exactly matches the sequence of elements in the document.
	www.oasis-open.org /docbook/documentation/reference/html/refelem.html (4018 words)

	physical properties of the period 3 oxides
		In these oxides, all the outer electrons in the Period 3 element are being involved in the bonding - from just the one with sodium, to all seven of chlorine's outer electrons.
		The trend in structure is from the metallic oxides containing giant structures of ions on the left of the period via a giant covalent oxide (silicon dioxide) in the middle to molecular oxides on the right.
		The electronegativity of the elements increases as you go across the period, and by the time you get to silicon, there isn't enough electronegativity difference between the silicon and the oxygen to form an ionic bond.
	www.chemguide.co.uk /inorganic/period3/oxidesphys.html (2047 words)

	Splicing of the period Gene 3'-Terminal Intron Is Regulated by Light, Circadian Clock Factors, and Phospholipase C -- ...
		Splicing of the period Gene 3'-Terminal Intron Is Regulated by Light, Circadian Clock Factors, and Phospholipase C -- Majercak et al.
		splicing of an intron in the 3' untranslated region of the period
		Sequential nuclear accumulation of the clock proteins period and timeless in the pacemaker neurons of Drosophila melanogaster.
	mcb.asm.org /cgi/content/full/24/8/3359 (8736 words)

	Time Element Program Available Endorsements And Their Uses
		However, damage occurring during looting at the time and place of a riot or civil commotion as well as building damage caused by breaking in or exiting of burglars is covered.
		This endorsement expands the period allowed so the actual and necessary loss sustained during the increased period of suspension is also covered.
		This endorsement eliminates the waiting period by redefining the "period of restoration" to begin immediately after the time of direct physical loss or damage.
	www.roughnotes.com /pfm/100/131_0403.HTM (2568 words)

	the period 3 hydroxides
		This page looks briefly at how the chemistry of the "hydroxides" of the Period 3 elements from sodium to chlorine varies as you cross the period.
		There are other acids (also containing -OH groups) formed by these elements, but these are the ones where the Period 3 element is in its highest oxidation state.
		In each case the -OH group is covalently bound to the Period 3 element, and in each case it is possible for the hydrogens on these -OH groups to be removed by a base.
	www.chemguide.co.uk /inorganic/period3/hydroxides.html (1080 words)

Try your search on: Qwika (all wikis)