How many valence electrons of hydrogen have?

The valence electron of hydrogen is 1. The valence electrons of hydrogen participates in bond formation. The hydrogen atom has only one electron. The symbol for hydrogen is ‘H’. Leaving 1 electron, hydrogen can turn into a positive ion. In this article, we will learn more about the valence electrons of hydrogen.

What are the valence electrons of hydrogen?

The total number of electrons in the last shell of an element after electron configuration is called the valence electron. The valence electron is located in the last shell of the atom. However, the valence electrons of the transition element may be in the inner orbital.

The atomic number of the hydrogen element is 1. That is, the hydrogen atom has a total of 1 electron. The electron configuration of hydrogen is 1s1.

valence electrons of hydrogen
Valence Electrons of Hydrogen

From the electron configuration of hydrogen, we can see that hydrogen has only 1 orbit and 1 electron is located there. We already know that the total number of electrons in the last shell or orbit is called the valence electron. The last shell of hydrogen has 1 electron. So the valence electron of hydrogen is 1.

Determining the number of valence electrons in hydrogen

To determine the valence electrons of a particular element, one must have a good idea of the electron configuration of that element. The number of electrons in the last shell cannot be determined without electron configuration. So, you need to know how to arrange the electrons of the element.

Scientist  Niels Bohr was the first to give an idea of the atom’s orbit. He provided a model of the atom in 1913. The complete idea of the orbit is given there. The electrons of the atom revolve around the nucleus in a certain circular path. These circular paths are called orbit. These orbits are expressed by n. [ n = 1,2 3 4 . . .]

K is the name of the first orbit, L is the second, M is the third, N is the name of the fourth orbit. The electron holding capacity of each orbit is 2n2. [Where, n = 1,2 3,4. . .]

Now,
n = 1 for K orbit.
The electron holding capacity of K orbit is 2n2 = 2 × 12 = 2 electrons.

For L orbit, n = 2.
The electron holding capacity of the L orbit is 2n2 = 2 × 22 = 8 electrons.

n=3 for M orbit.
The maximum electron holding capacity in M orbit is 2n2 = 2 × 3= 18 electrons.

n=4 for N orbit.
The maximum electron holding capacity in N orbit is 2n2 = 2 × 32 = 32 electrons.

electron configuration
Electron Configuration

Also, the German physicist Aufbau first proposed an idea of electron configuration through sub-orbits. The Aufbau method is to do electron configuration through the sub-energy level. These sub-orbitals are expressed by ‘l’. The Aufbau principle is that the electrons present in the atom will first complete the lowest energy orbital and then gradually continue to complete the higher energy orbital. These orbitals are named s, p, d, f. The electron holding capacity of these orbitals is s = 2, p = 6, d = 10 and f = 14. The Aufbau electron configuration method is 1 s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d. 

However, valence electrons can be easily identified by arranging electrons according to Bohr’s principle. We all know that the atomic number of hydrogen is 1. That is, the number of protons in hydrogen is 1. A number of electrons equal to the number of protons are located outside the nucleus. Therefore, the number of electrons in hydrogen is 1.

The electron configuration of hydrogen can be done very easily as a result of one electron. That is, the electron configuration of hydrogen is 1s1. The electron configuration of hydrogen shows that hydrogen has only one shell and 1 electron. So, we can easily say that the number of valence electrons in hydrogen is 1. In this way, the valence electrons of other elements can be easily determined.

How many valence electrons does hydrogen have?

Many people ask – how many valence electrons are there in 1 hydrogen atom. Although the answer to this question is very simple, many people find this question very complicated and confusing. I am trying to answer this question very easily. We all know that the atomic number of the hydrogen element is 1. The atomic number is the number of protons in that element.

The proton is located in the nucleus of the atom of that element and the proton is located in the nucleus of the atom. Electrons equal to protons are located in a circular orbit outside the nucleus.

Therefore, the number of protons in the hydrogen element is 1 and the number of electrons is 1. After the electron configuration of hydrogen, its last shell contains 1 electron. Therefore, the valence electron of a hydrogen atom is 1.

What are valence electrons and valency of hydrogen?

The ability of one atom to attract another atom during bonding and compound formation is called valency. The electrons in the last orbit of the atom participate in the formation of bonds or compounds. That is, valence electrons participate in the formation of compounds and bonds.

valence electrons of hydrogen
Valency and Valence Electrons of Hydrogen

Atoms receive, leave, or share electrons during the formation of compounds or bonds. Having an electron, hydrogen can easily leave or share an electron. So, the valency of hydrogen is 1 and since the last shell has one electron, the valence electron is 1. That is, the valency and valence electrons of hydrogen are both 1.

valency and valence electrons of hydrogen ion(H+)

We already know that valence electrons participate in the formation of bonds and compounds. Elements that have 1, 2, or 3 electrons in their last orbit can easily turn into positive ions by donating electrons. Those atoms that donate electrons and turn into positive ions are called cations. Since the hydrogen atom has only one electron, hydrogen can easily leave the electron and turn into a positive ion.

H – e  → H+

After the hydrogen atom donates electrons, the last shell of hydrogen has no electrons. Therefore, the valence electron of a hydrogen ion is zero. On the other hand, hydrogen donates an electron to form a bond or compound. Therefore, the valency of hydrogen ions is 1.

Compound formation of hydrogen by valence electrons

Since the last shell of a hydrogen atom has one electron, it can easily form bonds with other elements by sharing electrons. The electron configuration of oxygen shows that the valence electrons of oxygen are six. Oxygen and hydrogen atoms are non-metallic atoms. Oxygen and hydrogen atoms can form bonds through electron share. Two hydrogen atoms with one oxygen atom produce water(H2O) through electron share.

water molecule structure
Water molecule structure

The hydrogen atom acquires the electron configuration of helium by sharing an electron with oxygen. As a result, the hydrogen atom gains the electron configuration of helium and comes to a stable state.

On the other hand, The oxygen atom acquires the electron configuration of neon by sharing the electron with the two hydrogen atoms and comes to a stable state. In this way, hydrogen and oxygen produce water through valence electron sharing.

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