How many valence electrons does Potassium have?

What is the valency of potassium(K) Valence electrons

Potassium is the 19 th element on the periodic table. Potassium, also known as ‘K’, is an alkali metallic. Potassium bonds are formed by its valence electrons. This article discusses in detail how valence electrons work with potassium(K).Flaky white potassium oxide forms quickly when exposed to atmospheric oxygen. Elemental potassium reacts vigorously to water, producing enough heat to ignite hydro, which is then burned with a flame- color.

It was first isolated in potash (the ashes of plants), from which it gets its name. Potassium is an alkali metal in the periodic table. It is also one of the alkali elements. All of them have a single electron in their outer electron shell that can be easily removed to make an ion with positive charge, a cation. This combines with anions and forms salts. Potassium is only found in ionic sodiums in nature.

Potassium element


Fertilizers are the most important use for potassium compounds. Other potassium salts, such as the nitrate and carbonate, chloride bromide, cyanide, sulfate, and bromide are also of great importance. Glass is made from potassium carbonate. To make liquid soap and detergent, potassium hydroxide can be used. In pharmaceuticals and saline drips, potassium chloride is used.

Potassium’s environmental effects

Along with nitrogen and phosphorous potassium, it is an essential macromineral for plant survival. It is essential for soil health, plant growth, and animal nutrition. Its primary function is to maintain osmotic pressure in cells and cell size. This influences photosynthesis, energy production, and stomatal opening. The element is needed in large amounts by the plant.

Position of Potassium in the periodic table

Position of Potassium in the periodic table

Natural abundance

Potassium is seventh in abundance within the Earth’s crust. It accounts for 2.4% of the Earth’s total mass. The world has billions of tonnes worth of potassium chloride. Each year, mining extracts approximately 35 million tonnes.

The majority of potassium minerals can be found in igneous rocks, and they are not very soluble. These minerals make it difficult to get the metal. Other minerals, such as sylvite, sylvinite, and carnallite, are also found in the deposits that result from the evaporation old seas and lakes. These can easily be recovered with potassium salts. The ocean also contains potassium salts, but they are much less common than sodium.

Biological role

Potassium is vital for life. All cells contain potassium ions. It is essential for maintaining fluid and electrolyte equilibrium. Radioactivity can be found in potassium-40, a radioactive isotope that naturally occurs. However, this radioactivity may not cause any genetic mutations in humans.

An average person consumes 7g of potassium per day and has 140g stored in their bodies. Normal healthy eating habits provide enough potassium. However, some foods like instant coffee, instant noodles, bananas, raisins, potatoes, and chocolate contain more potassium than others.

Potassium has positive health effects

Potassium is found in vegetables, fruits, potatoes, meats, milk, and nuts. Potassium plays an important part in the human body’s fluid system and aids nerve function. Potassium is the ion K+ and concnetrate within cells. 95% of our body’s potassium can be found in this area. If our kidneys malfunction, an accumulation of potassium can occur. This can cause irregular heartbeats. Permanent damage can result from skin and eye contact.

Inhaled potassium can cause serious health problems. Inhaling dust and mists can cause irritation to the eyes, nose, throat, eyes, throat, lungs, and throat. Higher levels of exposure can lead to fluid buildup in the lungs and death.

atomic number19
atomic weight39.098
boiling point760 °C (1,400 °F)
melting point63.28 °C (145.90 °F)
specific gravity0.862 (at 20 °C, or 68 °F)
oxidation states+1, −1 (rare)
electron configuration2-8-8-1 or 1s22s22p63s23p64s1

Potassium isolution

Evaporite deposits found in old lake bottoms and seabeds contain potassium salts. This is a cost-effective way to extract potassium salts from large sources. Carnallites are the most basic types of potassium sources. They contain 45-85% carnallite, 18-50% halite, small amounts of anhydrite and clay minerals. Sylvinite, which contains 95-98% sylvite as well as kieserite and 40-60% halite, 0.5-2.0% carbonates and anhydrite. Most of the resources are found in the USSR, in the Urals (Solikamsk and Perm Oblast), western Kazakhstan and western Ukraine, and Byelorussia. Important foreign deposits include those found in the German Democratic Republic (Stassfurt), Federal Republic of Germany (“Hanover, Hesse and Baden”), the USA (the Carlsbad Region in New Mexico; Lake Searles, California), Canada (Saskatchewan), France (“Alsace”), and Italy (Sicily).

There are many methods that can be used to separate potassium salts form Na- or Mn-compounds. Fractional precipitation is the most popular method to separate these soluble salts. The majority of potassium is obtained in the form Potassium Chloride, (KCl), and used as fertilizer.

What are the valence electrons for potassium (K)?

Potassium, an element in group 1, is an alkali metallic. The valence electron refers to the number of electrons within the shell’s last orbit. The valence electrons for potassium (K) are the total number of electrons found in the shell following the electron configuration. The properties of an element are determined by the valence electrons. They also participate in the formation bonds.

What are the valence electrons of potassium(K)

What number of protons, electrons, and neutrons does the potassium (K) atom contain?

The nucleus can be found in the middle of an atom. The nucleus is home to protons and neutrons. The atomic number for potassium (K) is 19. The number of protons in a potassium atom is called the atomic number. Nineteen protons are found in potassium. The nucleus contains an electron shell that is equal to the protons. This means that the total number of electrons in the potassium atom is nineteen.

The difference between the number atomic masses and the number atoms is what determines the number neutrons within an element. This means that neutron number (n) = atomic mass (A) + atomic number (Z).

We know that the atomic quantity of potassium is 19, and that its atomic mass number (39.0983u) is 39. Neutron (n) = 39 – 19 = 20. The number of neutrons found in potassium(K), therefore, is 20.

Valence is the ability of an atom of a chemical element to form a certain number of chemical bonds with other atoms. It takes values from 1 to 8 and cannot be equal to 0. It is determined by the number of electrons of an atom spent to form chemical bonds with another atom. The valence is a real value. Numerical values of valence are indicated with roman numerals (I,II, III, IV, V, VI, VII, VIII).

How can you determine the number of valence neutrons in a potassium (K) atom?

These are the steps to determine the valence electron. One of these is the electron configuration. Without an electron configuration, it is impossible to determine the valence of an electron. It is easy to identify the configuration of each element. The Bohr principle allows you to identify valence electrons. We will now learn how to identify the valence electrons for potassium (K).

Calculating the total number electrons in potassium (K)

First, we must know the number of electrons present in the potassium atom. You need to know how many protons are in potassium in order to determine the number electrons. To know the number protons in potassium, you must know its atomic number. A periodic table is required to determine the atomic number. The periodic table contains the atomic numbers of the potassium (K) elements. The number of protons or electrons that are equal to those located outside the nucleus is called the atomic number.

This means that we can now say that the number of electrons in the potassium (K) atom is equal to its atomic number. The atomic number for potassium(K), as shown in the periodic table is 19. The atomic number of potassium(K) is 19.

The terms “oxidation degree” and “valence” may not be the same, but they are numerically almost identical. The conditional charge of an atom’s atom is called the oxidation state. It can be either positive or negative. Valence refers to the ability of an atom form bonds. It cannot have a negative value.

You will need to perform electron configuration of potassium (K)

Important step 2 This step involves the arrangement of the potassium electrons. A potassium atom contains nineteen electrons. The electron configuration of potassium (K) shows that the first two shells of potassium have two electrons, eight electrons in the second shell, eight electrons in the third shell, and eight electrons in the fourth shell. Through the sub-orbit, the electron configuration for potassium is 1s2 2s2 2p6 3s2 3p6 4s1.

Calculate the total electrons and determine the valence shell

The third step is to determine the valence. The valence shell is the last shell after the electron configuration. The total number electrons found in a valenceshell is called valence electrons. The electron configuration for potassium shows that the last potassium shell has only one electron. The valence electrons for potassium (K) therefore have one.

  1.  The valence is a numerical characteristic of the ability of atoms of a given element to bond with other atoms.
  2. The valence of hydrogen is constant and equal to one.
  3. The valence of oxygen is also constant and equal to two.
  4. The valence of most of the other elements is not constant. It can be determined by the formulas of their binary compounds with hydrogen or oxygen.

What number of valence electrons does potassium (K +), have?

During bond formation, elements with 1, 2, or three electrons in their last shell donate electrons from the previous shell. Cations are elements that donate electrons to form bonds. Potassium donates electrons from the last shell to create a bond that can then be transformed into a potassium Ion (K +). This is why potassium is a cation elements.

How many valence electrons does potassium ion(K+) have

The electron configuration for potassium ion (K+) is 1s2 2s2 2p6 3s2 3p6. The electron configuration for potassium-ion indicates that there are three shells to potassium ion(K+), while the last shell contains eight electrons. This electron configuration indicates that the potassium atom is now in the electron configuration of argon. In this instance, the valency for the potassium-ion would be +1. The valence electrons for potassium-ion (K +), are eight, since the last shell of a potassium ion contains eight electrons.

Potassium compound formation

Potassium is involved in the formation bonds via its valence electron. These valence electrons are involved in the formation bonds with other elements. The electron configuration for oxygen indicates that there are six -valence electrons. The potassium atom gives its valence electrons and the oxygenatom gets that electron. In this way, potassium (K) gains the electron configuration argon and the oxygen atom gets the electronic configuration of neon. Through electron exchange, potassium and oxygen atoms form potassium dioxide (K2O). Ionic bonding is when potassium oxide (K2O), and potassium atoms form potassium oxide (K2O).

What is the valency for potassium (K)?

Valency (or valence) is the ability of an element’s atom to join another atom in the formation of a molecule. The valency is the number of unpaired electrons found in an element’s last orbit. The electron configuration indicates that the potassium last shell has an unpaired electron (4s1).

What is the valency of potassium(K)

The valency for potassium is therefore 1.


  • Atomic symbol (on Periodic Table of Elements: K) (from the Latin for alkali, Kalium.
  • 19. Atomic number (number protons in the nucleus).
  • Number of isotopes (atoms with different numbers of neutrons from the same element): 29; 3 naturally occurring
  • 39.0983 is the average mass of an atom’s atomic weight.
  • Phase at room temperature
  • Melting point: 146.08 degrees Fahrenheit (63.38 degrees Celsius)
  • Boiling point: 1,398 degrees Fahrenheit (1,032 degrees Celsius)
  • Most common isotopes: K-39 (93.3 percent natural abundance), K-40 (0.0117 percent natural abundance), K-41 (6.73 percent natural abundance)
  • Density: 0.89g per cubic centimeter


  1. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing.
  2. John Davy, Memoirs of the Life of Sir Humphry Davy, 1836, p384 Longman.
  3. Vivi Ringnes, Origin of the Names of Chemical Elements., J. Chem. Educ., 1989, 66 (9), p731.
  4. John Davy, The Collected Works of Sir Humphry Davy, Vol V, 1840, p68 Smith, Elder and Co. Cornhill.
Alexander Stephenson

Candidate of Chemical Sciences, editor-in-chief of Lecturer at several international online schools, member of the jury of chemistry competitions and author of scientific articles.

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