What period and group is iron in?
Brake dust gets embedded in the brake shoes. The brake shoes get glazed. That's most likely the problem. Remove the rear wheel. Clean the shoes and brake drum with contact/brake cleaner (available at auto parts and bike shops). Careful not to breath in the brake dust (harmful). Either change the brake shoes, or score them up with a wire brush.
GROUP 8, PERIOD 4 Name, symbol, number: iron, Fe, 26 Electrons per shell: 2, 8, 14, 2 Melting point 1811 K (1538 °C, 2800 °F) Boiling point 3134 K (2862 °C, 5182 °F) Characteristics: Iron is a metal extracted mainly from the iron ore hematite. It oxidises readily in air and water and is rarely found as a free element. In order to obtain elemental iron, oxygen and other impurities must be removed by chemical reduction. Iron is the main constituent of steel, and it is used in the production of alloys or solid solutions of various metals, as well as some non-metals, particularly carbon. The many iron alloys, which have very different properties, are discussed in the article on steel.
Brake dust gets embedded in the brake shoes. The brake shoes get glazed. That's most likely the problem. Remove the rear wheel. Clean the shoes and brake drum with contact/brake cleaner (available at auto parts and bike shops). Careful not to breath in the brake dust (harmful). Either change the brake shoes, or score them up with a wire brush.
GROUP 8, PERIOD 4 Name, symbol, number: iron, Fe, 26 Electrons per shell: 2, 8, 14, 2 Melting point 1811 K (1538 °C, 2800 °F) Boiling point 3134 K (2862 °C, 5182 °F) Characteristics: Iron is a metal extracted mainly from the iron ore hematite. It oxidises readily in air and water and is rarely found as a free element. In order to obtain elemental iron, oxygen and other impurities must be removed by chemical reduction. Iron is the main constituent of steel, and it is used in the production of alloys or solid solutions of various metals, as well as some non-metals, particularly carbon. The many iron alloys, which have very different properties, are discussed in the article on steel.
