Group+1



ALKALI METALS  =WELCOME TO GROUP ! =

 ELEMENTS

Lithium (Li) Atomic # 3 Atomic Mass 7 Protons 3 Neutrons 4 Electrons 3 Bolivia has 1/2 of the world's Lithium deposits. 1s(2) 2s(1) n: 1 l: 0 m1: 0 ms: 1/2

Sodium (Na) Atomic # 11 Atomic Mass 23 Protons 11 Neutrons 12 Electrons 11 Most common use is table salt. 1s(2) 2s(2) 2p(6) 3s(1) n:1 l: 0 m1: 0 ms: 1/2

Potassium (K) Atomic #19 Atomic Mass 40 Protons 19 Neutrons 21 Electrons 19 Much of it is found in Bananas. 1s(2) 2s(2) 2p(6) 3s(2) 3p(6) 4s(1) n: 1 l: 0 ml:0 ms: 1/2



Rubidium (Rb) ATomic # 37 Atomic Mass 85 Protons 37 Neutrons 48 Electrons 37 It was named after two red lines in the spectrum. 1s(2) 2s(2) 2p(6) 3s(2) 3p(6) 4s(2) 3d(10) 4p(6) 5s(1) n: 1 l: 0 ml: 0 ms: 1/2



Cesium (Cs) ATomic # 55 Atomic Mass 133 Protons 55 Neutrons 78 Electrons 55 It is the softest of all of the metals 1s(2) 2s(2) 2p(6) 3s(2) 3p(6) 4s(2) 3d(10) 2p(6) 5s(2) 4d(10) 5p(6) 6s(1) n: 1 l:0 ml:0 ms: 1/2



Francium (Fr) Atomic # 87 Atomic Mass 223 Protons 87 Neutrons 136 Electrons 87 Mendeloev predicted it. 1s(2) 2s(2) 2p(6) 3s(2) 3p(6) 4s(2) 3d(10) 4p(6) 5s(2) 4d(10) 5p(6) 6s(2) 4f(14) 5d(10) 6p(6) 7s(1) n: 1 l:0 ml:0 ms:1/2



  History: Alkali metals are ancient and referred to in the old testament

Sir Humphrey Davey discovered the group in 1807 by isolating potassium and sodium

 Alkali metals get their name because the react with H20 to form alkaline solutions. They reason these compounds are so reactive is that they only hold one valence electron. If they get rid of their one valence electron they become stable 

 Look at this awesome picture of alkaline metals exploding in metals

 **Features: Soft Shiny when cut, but then dulls quickly when reacts with water or air Good conductors of electricity**  The physical and chemical properties of Alkali metals are all similar. Although, the differ between reactiveness, the are all shiny and soft. The Alkali metals are the most reactive elements within the periodic table. They all react with water, oxygen and halogens. 

http://www.webelements.com/ http://www.chemicalelements.com/groups/alkali.html

A weird fact about alkali metals, is that they are stored usually in oil to stop the violent reactions they have with water and air. These metals are never found in nature as pure elements, but can commonly be found as compounds. An example is NaCl…or…salt.



SOURCES: www.britannica.com www.webelements.com www.chemicalelements.com our book