Identify the correct statement ? All binary components are named using prefixes
Roman numerals are used for cations that have a constant change
In iconic compounds the cation is named before the anion
Acids are named similarly to covalent compounds

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l