Group+8Hr7

= Group 8 =

**Consists of---> Iron, Ruthenium, and Osmium**


=**__Iron__**= Lustrous metallic metal with a grayish tinge, solid.

Atomic Mass=55.845 Atomic #=26

Electrons-26 Protons-26 Neutrons-30

__Electron Configuration__ Fe e-26 [Ar] 3d6 4s2

__Quantum Numbers__ N=4 I=0 MI=0 Ms=-1/2

Naturally occuring iron has 4 existing isotopes. 54**Fe** 56**Fe** 57**Fe** 58**Fe**

Known since ancient times. Before written history.

__Fun Facts__ > 10th most abundant element in the universe. > Most used of all metals. > Iron is the densest chemical element that can be formed in a star. > Liver is an excellent source of Iron.

=__**Ruthenium**__=

Silvery white metallic

Atomic Mass=101.07 Atomic #=44

Electrons-44 Protons-44 Neutrons-57

__Electron Configuration__ Ru e-44 [Kr] 4d7 5s1

__Quantum Numbers__ N=1 I=0 MI=0 Ms=1/2

Naturally occuring ruthenium consists of 7 stable isotopes.

Ruthenium was discovered by Karl Klaus in 1844**.**

Fun Facts > Mined in North and South America, Canada and South Africa. > It's chrystal structure is a hexigon. > It is a hard white metal that does not tarnish at room temperature. > But it can oxidise explosively

=**__Osmium__**=

Silvery, blue

Atomic Mass=190.23 Atomic #=76

Electrons-76 Protons-76 Neutrons-114

__Electron Configuration__
 * Os** e-76 [Xe] 4f14 5d6 6s2

__Quantum Numbers__ N=6 I=0 MI=0 Ms=-1/2

Osmium has 7 isotopes. 6 of which are natural. 184**Os** 187**Os** 188**Os** 189**Os** 190**Os** 192**Os** 186**Os**

Osmium was discovered in 1803 by scientists //Smithson Tennant//, and //William Hyde Wollaston// in London England.

__Fun Facts__ > Densest metal on face of the earth. >Highest melting point and the lowest vapor pressure of the platinum group > 7,700 for 100 gram of osmim. Like buying a bag of peanuts for 7,700 dollars.

for more element info try http://www.webelements.com/iron/ http://www.chemicool.com/elements/osmium.html

Fun facts are from Yahoo answers. And information on atomic numbers etc from periodic table http://www.webelements.com/iron/ http://www.chemicool.com/elements/osmium.html