This fin variety most closely resembles wild betta splendens, as long tails and the subsequent tail types were all selectively bred by human intervention. These fish are often mistaken for female bettas, who generally have shorter fins, but this is an entirely different variety of betta.Males can be distinguished by females by their longer ventral fins, more pointed/angled anal fin, and slightly different body shape.ouble Tail. A fin type in which the caudal (tail) fin is split into two lobes instead of one. This is a genetic trait, and the same genetics that cause this double-tail cause the dorsal and anal fins to be very broad and the body to be shorter, which predisposes these fish to swimbladder problems.
Oxygen = three ions each with a charge of -2 = 3 x -2 = -6. The overall charge of the polyatomic ion is -2. This means that the oxidation number of the carbon must be +4. Total charge = +4 + -6 = -2. Here is a video which discusses this topic by discussing how to determine oxidation numbers of elements in the bicarbonate and dichromate ions. Video from: Noel Pauller.
Using the oxidation numbers of the the atoms that constitute the sulfate ion that has a formula of SO4, the oxidation state is determined by adding the oxidation number of sulfur and oxygen.Sulfur has an oxidation number of 6, or it loses 6 atoms when it forms a chemical compound.Oxygen atoms on the other hand accept 2 electrons each when they form a compound. The sulfate anion has a formula of SO4, this gives a net oxidation state of +6 + 4*(-2) = -2.osted on. (Answer #1). The oxidation number refers to the charge on the central atom of a compound when the ligands attached to it are removed and so are the atoms that associated with the ligand. For the sulfate anion it is the oxidation state that can be determined not the oxidation number.