Atomic radii decrease, moving from left to right across a period. as a result, the electrons become closer to the nucleus. what effect does this movement have on the ionization energy (the amount of energy required to remove an electron from an atom)?

explanation:

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