# What is the valence for oxygen?

Of Oxygen is 8.so,electronic configuration of oxygen is 2,6.there is need to be atmost 2 electrons are present in first shell of an atom .and in second shell there are 8 electrons are needed to form stable octate.but oxygen only have 6 electrons in 2nd shell.so,oxygen needs 2 electrons to complete its octate.HENCE,THE

Subsequently, one may also ask, how many valence electrons are in the oxygen atom?

This means that oxygen has 8 protons and 8 electrons. In order to get the number of neutrons you take the atomic weight in this case 15.9999~16 and you subtract it by the number of protons (16-8). To get the number of valence electrons just look at the numbers above the oxygen on the periodic table.

What is the valence electron configuration for the oxygen atom?

[He] 2s2 2p

## How many valence electrons are in an atom of oxygen?

6 valence electrons

## What is the valence of water?

In the water molecule oxygen combines with two hydrogens and so has a valency of 2. A simple diagram of a water molecule makes this plain. The hydrogen atoms are each sharing one pair of electrons – they have a valency of 1. The oxygen atom is sharing two pairs of electrons – it has a valency of 2.

## How do you determine the number of valence electrons?

For neutral atoms, the number of valence electrons is equal to the atom’s main group number. The main group number for an element can be found from its column on the periodic table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons.

## What is the valence of chlorine?

Valence electrons are the number of electrons present in the outermost shell of an atom. The last shell of a chlorine atom has 7 electrons in it. Therefore, there are 7 valence electrons in an chlorine atom.

## What is the Valency of iron and why?

Iron (Fe) has an atomic number of 26, i.e. has 26 electrons. The energy of 4s and 3d orbital is similar (4s has slightly higher energy). Now, iron exhibits 2 valence states of +2 and +3. When iron loses the 2 4s electrons, it attains a valency of +2.

## Which electrons are the valence electrons of the atom?

Chemical reactions. The number of electrons in an atom’s outermost valence shell governs its bonding behavior. Therefore, elements whose atoms can have the same number of valence electrons are grouped together in the periodic table of the elements.

## What is the valence of beryllium?

Beryllium can loose two electrons to form divalent Be ++ ions in its electrovalent compounds. Beryllium’s atomic number is 4. So electronic configuration of Be is 1s² 2s² . So the valency is 2 as it has 2 electrons in the outermost shell.

## What is the Valency?

In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules.

## What is the valence electrons of nitrogen?

Nitrogen is found to have either 3 or 5 valence electrons and lies at the top of Group 15 on the periodic table. It can have either 3 or 5 valence electrons because it can bond in the outer 2p and 2s orbitals.

## What is the Valency of potassium?

The valency of potassium is +1 due to highly electropositive nature. Its valency is 1 because it belongs to group 1 of periodic table and has 1 electron in it’s valence shell. And also has tendency to loose its single electron to acquire stable inert gas configuration.

## What is the valence of Na?

why sodium has valency 1 and chlorine also 1? Sodium has atomic mass 23, atomic number 11. Chlorine has atomic mass 35 ,atomic number 17. Both Na and Cl require 1 electron either to loose or to gain ,so they can attain stable configuration.

## How does the Valency vary in a period?

Atomic size decreases on going along a period from left to right because the elctron enters into the same shell, therefore, attraction between nucleus and outermost electron increases and thus atomic size decreases. The atoms shrink and the maximum valency increases.

## What is electronic configuration?

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. This is also useful for describing the chemical bonds that hold atoms together.

## What is the Valency of zinc?

Notice that the outermost shell, which for zinc is the fourth shell, n=4 , has two electrons. This means that zinc can lose the two electrons located in the 4s-orbital to be become the Zn2+ cation. Therefore,zinc has only 2 valence electrons, both located in the 4s-orbital.

## What are some examples of Valency?

The valency of an element is the number of hydrogen atoms that can combine with or replace (either directly or indirectly) one atom of the element. For example, oxygen has six valence electrons, but its valency is 2. Some elements may have more than one combining power (or valency), while others have just one.

## What is the Valency of phosphorus and why?

Likewise, one atom of phosphorus combines with three atoms of hydrogen to form the normal hydride phosphene, PH3. Therefore, the valency of phosphorus is 3 only. Even though phophorus shows stable oxidation states of +3 and +5 in compound formation, its valency is only 3.

## What is the Valency of helium and why?

Valency, the combining capacity of an element, is equal to the number of electrons needed, or required to be removed from the outermost shell of the atom of that element, to have a complete ‘octet’. The helium atom has only the 1s orbital in its only shell, and it is completely filled with 2 electrons.

## What is the valence of silver?

Silver is a group 11 transition metal in the 5th period of Periodic table with symbol Ag (Argentum from Latin word). In most case the valency of Ag is 1, as the d sub-shell has stable configuration if they loss 1 electrons from s sub-shell. There fore the most common valency of silver is 1.

## What is the valence of nitrogen?

Nitrogen is found to have either 3 or 5 valence electrons and lies at the top of Group 15 on the periodic table. It can have either 3 or 5 valence electrons because it can bond in the outer 2p and 2s orbitals. Compounds of nitrogen are found in foods, explosives, poisons, and fertilizers.

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