Manganese commonly occurs in nature as a mineral. the extraction of manganese from the carbonite mineral rhodochrosite, involves a two-step process. in the first step, manganese (ii) carbonate and oxygen react to form manganese (iv) oxide and carbon dioxide

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.