Reggie Joseph 10/23/14
Mrs.Flannery
Chemisty 10A
Iodine:
During the course of this project, I have learned many things about the element Iodine and it's contributions to the world. In the early 1800's, Bernard Courtois manufactured potassium nitrate and used seaweed ash as his mains source of potassium. one day in 1811, Courtois added sulfuric acid and saw purple fumes which condensed to form crystals with a metallic luster. Courtois suspected that this was a new element and showed it to Charles-Bernard Desomes and to Nicholas Clement who carried out a systematic evaluation and investigation and confirmed that it was. In the fall of 1813, they exhibited Iodine at the Imperial Institute in Paris. Two other scientists named Joseph Gay-Lussac and Humphry Davy validated and confirmed this element. Davy sent a report to the Royal institution in London where its was mistakenly assumed he was the discoverer which …show more content…
Halogens are a special group because it is the only group that contains a solid, liquid and gas at stp. Iodine is also located in Period 5 in the p-block of the periodic table. It has 7 valence electrons and has 5 shells. Iodine is solid nonmetal at STP and it's electron configuration on shorthand in [Kr]4d105s25p5. Iodine has 53 protons and electrons and 74 neutrons. It has an atomic mass of 126.904 amu and I127 is a common isotope. It's electronegativity is 2.7 which means it has a decent ability to get electrons to be like a noble gas. It's melting point is 387(K) which is Kelvin and it's boiling point is 457(K) (both at STP). Iodine's first IOnization energy is 1008. (kj/mol) and it's atomic radius is 136 pm. which stands for picometers. Iodine also has a density of 4.933 g/cm3. Ths element is both found and manufactured in Chile, the United States of America, and
Mrs.Flannery
Chemisty 10A
Iodine:
During the course of this project, I have learned many things about the element Iodine and it's contributions to the world. In the early 1800's, Bernard Courtois manufactured potassium nitrate and used seaweed ash as his mains source of potassium. one day in 1811, Courtois added sulfuric acid and saw purple fumes which condensed to form crystals with a metallic luster. Courtois suspected that this was a new element and showed it to Charles-Bernard Desomes and to Nicholas Clement who carried out a systematic evaluation and investigation and confirmed that it was. In the fall of 1813, they exhibited Iodine at the Imperial Institute in Paris. Two other scientists named Joseph Gay-Lussac and Humphry Davy validated and confirmed this element. Davy sent a report to the Royal institution in London where its was mistakenly assumed he was the discoverer which …show more content…
Halogens are a special group because it is the only group that contains a solid, liquid and gas at stp. Iodine is also located in Period 5 in the p-block of the periodic table. It has 7 valence electrons and has 5 shells. Iodine is solid nonmetal at STP and it's electron configuration on shorthand in [Kr]4d105s25p5. Iodine has 53 protons and electrons and 74 neutrons. It has an atomic mass of 126.904 amu and I127 is a common isotope. It's electronegativity is 2.7 which means it has a decent ability to get electrons to be like a noble gas. It's melting point is 387(K) which is Kelvin and it's boiling point is 457(K) (both at STP). Iodine's first IOnization energy is 1008. (kj/mol) and it's atomic radius is 136 pm. which stands for picometers. Iodine also has a density of 4.933 g/cm3. Ths element is both found and manufactured in Chile, the United States of America, and