Which of the following is a characteristic of nonmetals? nonmetals do not conduct electricity. nonmetals are often shiny and hard. nonmetals are often malleable. nonmetals are often ductile.

Option (a) is the correct answer.

Explanation:

Non-metals are the species which in order to complete their octet readily gain an electron.

For example, fluorine is a non-metal with atomic number 9 and its electronic distribution is 2, 7.

Hence, to attain stability it readily accepts an electron from a donor atom.

Some characteristics of non-metals are as follows.

Non-metals do not conduct electricity.

Non-metals are brittle in nature and they have a rough surface.

Non-metals are not malleable or ductile.

Thus, we can conclude that non-metals do not conduct electricity is a characteristic of non-metals.

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