Is K2O Ionic: Why, How and Detailed Explanations


In this article the reason behind considering K2O that is Potassium Oxide as an Ionic compound (is K2O Ionic) would be described by explaining the facts and chemistry behind it. How K2O is ionic would be defined by illustrating the facts of ionic properties in this article.

The facts regarding K2O and its Ionic properties are very important to understand with chemically justified explanations.

How K2O is Ionic?

K2O is completely Ionic compound as it follows all the principle of being Ionic. Potassium does not exist as a single atom as it is too much reactive in nature. It exists as K2.

K2 molecule undergoes electron donation process and Oxygen adopts those electrons and makes bond with potassium. Oxygen urge for having 2 electrons in its last cell for completing octet state (which gives stability as the nearer noble gas) so it takes the free electrons transferred by each K atoms in K2. Each K atom donates one electron. 

is k2o ionic
Lewis structure shows “Is K2O Ionic” from Wikipedia

Each of the potassium atoms also donates the election to get the same stable electronic configuration as the nearer noble gas in periodic table and fulfil octet state. 

K2 is metal and it transfer electrons to the non-metal oxygen. Therefore, it is proved that K2O is ionic by nature.

Before explaining the reason for K2O being Ionic it would be reliable to describe the principles that are possessed by the Ionic compounds in chemistry. It would bring forth the fundamental verifications of explaining the reasons for K2O, being ionic.

The principles of Ionic compounds are given below:

K2O has been identified to possess all the above mentioned principles. That is why it is completely contemplated as an ionic compound.

It would be effective to compare the chemical properties of ionic compounds with K2O for representing the fact that how K2O is ionic. K2O is found in solid state (in pale yellow colour) generally and it conducts electricity by being dissolved in polar solvent like water.

The melting point of potassium oxide is too high. It is near about 740 °C and it starts decomposing at the temperature of 300°C. However, these explanations could be enough to confirm that K2O is an ionic compound.

Is K2O ionic and a binary compound?

Binary ionic compounds consist of a metal and a non-metal and the mane of the metal comes first and following that the name of the non-metal takes place in the nomenclature with the addition of “ide.”

is k2o ionic
Internal structure of Potassium Oxide from Wikipedia

This principle is mitigated by K2O. Potassium and Oxygen combines and they are named as Potassium oxide in chemistry. Therefore, it is completely proved that K2O is a binary compound.

As K2O contain only two different elements therefore; it is called binary compound. he crystalline structure of K2O is ionic so it comes under the criterion of binary Ionic compounds.

Read more about Binary Ionic Compound

Is K2O molecular, ionic or atomic?

K2O is not considered as molecular or atomic. There is a complete justified explanation exists in chemistry for K2O being Ionic.

K2O is utterly appraised as an Ionic compound.  The complete election share takes place in this compound. Two potassium atoms releases two electrons from its last cell and get positively charged ions that is K+.

Oxygen takes those electrons and also gets negatively charged. Oxygen molecule also gets ionic in this way. Therefore, Ionic bonds are formed between potassium and oxygen and the atoms exist in ionised state.

In the case of forming molecular compound the atoms must share their on or more than one electron with each other. They cannot deliver the electrons permanently and no ionised state takes place in molecular compounds. Therefore, K2O is not molecular.

When the actual numbers of atom bond with each other in the compounds and reflected on the formula of the compounds then the compounds are called molecular compounds. The actual number of atoms cannot identify through the formula of K2O. Therefore, K2O is not molecular compound as well.

Some Frequently Asked Questions (FAQs)

Question 1: Give a definition of Binary compound. Give an example other than K2O.

Answer: The compounds which are made of combining two completely distinguishable elements are called Binary compound. For example, calcium Oxide, CaO is a binary compound as it is the combination of calcium metal and Oxygen non-metal.

Question 2: What is the reason possess by the elements behind transferring electrons and make ionic bonds?

Answer: The main reason for the element for transferring electron is to fulfil the octet state to get same electronic configuration as the nearer noble gas they find in periodic table.

Question 3: What is the main property of molecular compounds?

Answer: Molecular compounds are found to show the exact number of atoms they hold on their molecular bonds by their chemical formula.

Question 4: in which state K2O is found in nature? Does it conduct electricity? Explain how.

Answer: K2O is found in solid state in nature. It can conduct electricity in molten state that is being ionised in the polar solvents like water.

Question 5: What are the valence of potassium and oxygen? How many electrons are needed to them for adopting octet state?

Answer: The valance of Potassium is 1 and oxygen is 6. That means potassium needs 1 more electron to achieve octet. Oxygen has 6 electrons in its last cell and needs 2 more electrons to achieve octet.

Sarnali Mukherjee

Hi.....I am Sarnali Mukherjee, a graduate from the University of Calcutta. I love to teach and share knowledge on chemistry. I have gradually gained interest in article writing since one year ago. I would love to acquire more knowledge on my subject in the future. Let's connect through LinkedIn: https://www.linkedin.com/in/sarnali-mukherjee-921b59231

Recent Posts