The electron pair geometry of a molecule is tetrahedral. what is its bond angle if it shows one lone pair of electrons and three bonding pairs? less than 109.5°more than 109.5°equal to 109.5°zero

I think the correct answer is 109.5 degrees. The bond angle of a chlorite ion or ClO2- ion is 109.5 and has a bent shape. This is because of two groups of bonding electrons and two lone pairs of electrons. Another example of a molecule that has a bent molecular geometry is water. It results from its tetrahedral electron pair shape.

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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