Question

Which of the following is not true about manganese?
1. It is used in heating elements of electric irons, toasters etc.
2. Manganese is an electronegative element.
3. Temperature affects its resistance at high levels.
4. It does not oxidize easily.

Answer 1

Correct Answer - Option 3 : Temperature affects its resistance at high levels.

The correct answer is Temperature affects its resistance at high levels.

• Manganese is a naturally occurring element and an essential mineral nutrient.
  • It’s important for maintaining good health, though manganese can be toxic at high levels.
  • Manganese is the fifth most abundant metal in the Earth's crust.
  • Its minerals are widely distributed, with pyrolusite (manganese dioxide) and rhodochrosite (manganese carbonate) being the most common.
  • Manganese is a chemical element with the symbol Mn and atomic number 25.
  • It is not found as a free element in nature; it is often found in minerals in combination with iron.
  • Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steel.
  • The main mining areas for manganese are in China, Africa, Australia, and Gabon.
  • An element's electronegativity is the power of an atom when in a molecule to attract electron density to itself. The electronegativity depends upon a number of factors and in particuler as the other atoms in the molecule.
  • Electronegativity of Manganese is 1.55 (Pauling Scale). 

• Our body contains numerous proteins called enzymes.
  • Enzymes help to speed up chemical reactions.
  • Manganese is a necessary component of several important enzymes in your body that work to process carbohydrates, amino acids, and cholesterol.
  • Manganese is essential for enzymes that help form bone and cartilage.
  • Manganese is present in an enzyme that provides an amino acid called proline.
  • Proline is necessary for the production of collagen in our skin cells. Collagen formation is essential to wound healing.