Question

Like sodium and chloride in table salt, the potassium atom is bonded to the oxygen atom in potassium hydroxide by the transfer of an electron from the potassium atom to the oxygen atom to create a(n) _____ bond.

A.Ionic
B.Covalent
C.Metallic
D.Compound

Answer 1

The answer is Ionic.

Hope this helps! :)

Answer 2

Answer: The correct answer is Option A.

Step-by-step explanation:

Ionic bond is defined as the bond which is formed by complete transfer of electrons from one atom to another atom. The atom which looses the electron is known as electropositive atom and the atom which gains the electron is known as electronegative atom. This bond is usually formed between a metal and a non-metal.

Covalent bond is defined as the bond which is formed when sharing of electrons takes place between the atoms. This is usually formed between two non-metals.

Metallic bond is defined as the bond which is formed between positively charged atoms having free electrons and are shared among a lattice of cations. This is usually formed between metals.

Compound is defined as the substance which is formed when two or more different type of atoms combine.

Now, according to the question:

Potassium is 19th element of the periodic table having electronic configuration of
`[Ar]4s^1`

This element will loose 1 electron to form
`K^+` ion.

Oxygen is the element of the periodic table having electronic configuration of
`[He]2s^22p^4`

This element will gain electrons to form
`O^(2-)` ion

Thus, 2 potassium ions are needed to neutralize the charge on 1 oxygen atom. Therefore, they form ionic bond.

Hence, the correct answer is Option A.