Which of the following would you expect to form a molecular compound? Hydrogen and sulfur
ble
Sodium and bromine
Potassium and nitrogen
sa
Iron and oxygen
nd

it's all four options.

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