[DOC] [TLE] Periodic table, main group elements - New World Encyclopedia [PAR] These groups contain the most naturally abundant elements, comprise 80 ... The 
alkali metals are the series of elements in Group 1 of the periodic table ... These 
elements all have one valence electron which is easily lost to form an ... The 
earliest known system used by the Greeks consisted of four elements, including 
earth. [DOC] [TLE] Chemical Elements.com - Alkali Metals [PAR] The alkali metals, found in group 1 of the periodic table (formerly known as group IA), are very reactive metals that do not occur freely in nature. These metals have only one electron in their outer shell. ... Cesium and francium are the most reactive elements in this group. [DOC] [TLE] alkali metal | chemical element | Britannica.com [PAR] Alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the 
periodic ... The other alkali metals are considerably more rare, with rubidium, 
lithium, and cesium, ... Modern version of the periodic table of the elements. ..... 
These include interference effects and coherent motion of the entire cloud of 
atoms. [DOC] [TLE] Chem4Kids.com: Elements & Periodic Table: Alkali Metals [PAR] Chem4Kids.com! This tutorial introduces alkali metals of the periodic table. Other 
sections include matter, elements, reactions, and biochemistry. [DOC] [TLE] How Are Elements Grouped? | Classification of Elements [PAR] Apr 5, 2013 ... Elements are classified into two main groups: metals and nonmetals. ... The 
periodic table arranges all of the known elements in order of increasing atomic 
number. ... These elements have very similar behavior and characteristics. ... 
Alkaline earth metals: The alkaline earth metals make up Group 2 of the... [DOC] [TLE] Periodic Table - Model Science Software [PAR] The alkali metals, found in group 1 of the periodic table, are highly reactive 
metals ... Their valence electrons are present in more than one shell. ... While 
these elements are ductile and malleable, they are not the same as the transition 
elements. ... Some of these properties include atomic radius, electronegativity, 
ionization... [DOC] [TLE] Periodic Trends - Chemistry LibreTexts [PAR] Oct 3, 2016 ... Major periodic trends include: electronegativity, ionization energy, ... half full, it 
requires less energy to lose an electron than to gain one. ... According to these 
two general trends, the most electronegative element is fluorine, with 3.98 
Pauling units. .... Figure 6: Periodic Table showing Atomic Radius Trend. [DOC] [TLE] Periodic Properties of the Elements - Chemistry LibreTexts [PAR] Jun 22, 2016 ... The elements in the periodic table are arranged in order of increasing atomic 
number. All of these elements display several other trends and we can use ... A 
metallic radius is one-half the distance between the nuclei of two ... Therefore, the 
electrons are held more loosely and the atomic radius is increased. [DOC] [TLE] Reading the Periodic Table [PAR] Each period contains more elements than the previous one. ... 1A - alkali metals 
... in most periodic tables and form a diagonal from C-6 to Rn-86 and include all 
the elements of that corner including H. They share some of these characteristics. [DOC] [TLE] Alkali metal - Wikipedia [PAR] The alkali metals are a group (column) in the periodic table consisting of the 
chemical elements ... Caesium, the fifth alkali metal, is the most reactive of all the 
metals. ... One of the best-known applications of the pure elements the use of 
rubidium and .... Indeed, these flame test colours are the most common way of 
identifying... [DOC] [TLE] Chemical element - Wikipedia [PAR] A chemical element or element is a species of atoms having the same number of 
protons in ... Iron is the most abundant element (by mass) making up Earth, while 
oxygen is the most ... The properties of the chemical elements are summarized 
on the periodic table, which ... Of these 118 elements, 94 occur naturally on Earth
. [DOC] [TLE] Block (periodic table) - Wikipedia [PAR] A block of the periodic table of elements is a set of adjacent groups. The term 
appears to have .... Most s-block elements are

Question: Most of the elements on the periodic table are these, including the 6 alkali ones
Answer: metals