In this article, we should learn about the Ba2+ lewis structure and its characteristics detailed fact.
Ba2+ lewis structure will be included in its valence electrons, a number of available lone pairs, and also its chemical nature. Ba2+ is the dication of barium which is a s block element. It is an alkaline earth metal, it can form a strong base with hydroxide.
Barium metal has a 6s orbital so it shows relativistic contraction and for this phenomenon, the chemical, as well as physical behavior, will differ from other alkaline metals. It can form different salts with halogen anions.
Some facts about Ba2+
The electronic configuration of Ba is [Xe]6s2, but for Ba2+ there will be two electrons less from Ba metal, and the valence shell will be 6s, so two electrons are removed from the 6s orbital. So, the electronic configuration of Ba2+ is 1s22s22p63s23p63d104s24p64d105s25p65d10. Ba2+ has 54 electrons and its gain nearest noble gas configuration similar to Xe. The ionic radius of Ba2+ is 135 pm and it is the largest alkaline earth metal dication.
1. How to draw Ba2+ lewis structure?
By the drawing Ba2+ lewis structure, we can predict the lone pairs of its, and the number of electrons available for bond formation.
First of all, it is a single dication so no need to add electrons, we should consider its electrons only. As it is a dication so an equal number of electrons should be removed from its configuration and no need to add a bond because there is no molecule here. After that, the lone pair is assigned if available.
2. Ba2+ lewis structure formal charge
The formal charge is generally assigned for a molecule taking into consideration all atoms should same electronegativity.
But in the Ba2+ lewis structure, there are no other atoms present. So, we consider only the charge over the Ba2+ that is +2. So, the formal charge of Ba2+ is +2 as it is a cationic species so the formal charge is equal to the charge assigned to it.
3. Ba2+ lewis structure octet rule
The octet rule is for an atom that gives or takes electrons from other species to complete its valence shell and gain the nearest noble gas configuration.
The electronic configuration of Ba is [Xe]6s2 but the electronic configuration of Ba2+ is [Xe], which means two electrons should be removed from the 6s orbital as Ba is s block element so the valence shell should be one s orbital. In the Ba2+ lewis structure, ba2+ is already completing its octet donating its two electrons and gaining the nearest noble gas configuration.
4. Ba2+ lewis structure lone pairs
The concept of lone pairs comes after the bond pairs involved in bond formation and the remaining electrons consider lone pairs.
From the Ba2+ lewis structure, we can see all the 54 electrons are available and they do not participate in any bonding, as ba2+ is a single dication. So here we can’t predict the lone pairs of Ba2+.
5. Ba2+ valence electrons
Valence electrons are those electrons that are present in the valence shell or outermost shell of an atom.
From the Ba2+ lewis structure, the electronic configuration of Ba2+ is 1s22s22p63s23p63d104s24p64d105s25p65d10. So, the outer most shell will be 5d orbital and there are 10 electrons present so the shell in fully completed and those are the valence electrons for Ba2+.
6. Ba2+ solubility
The solubility of any atom or ion is represented as the how extent they can be soluble in a giver solution.
Ba2+ lewis structure is a dication ionic species so it must be soluble in water. Even Ba2+ can be soluble in any other polar solvent and in an organic solvent, the solubility will be low.
7. Is Ba2+ ionic?
A molecule or atom should be ionic by how many % of ionic character it has.
From the lewis structure of Ba2+, the ionic potential of Ba2+ is moderately high. The size of the cation is large and the charge density is also high. So Ba2+ is ionic.
8. Is Ba2+ polar or nonpolar?
The polarity of a molecule or atoms should be described that the molecule or atoms should have some resultant dipole moment.
The dipole moment always works from a more electronegative site to a less electronegative site. But in the Ba2+ lewis structure there is no such other atom present but the molecule has some dipole moment due to its cationic nature.
9. Is Ba2+ acidic or basic?
Acidity or basicity depends on the nature of cation and anions also.
From the HSAB (HARD SOFT ACID-BASE) principle, we can say that every cation having a larger size and less electron potential are soft acid. They have a low tendency to polarize any larger anion. They can form stable molecules by forming bonds with soft bases. Although Ba2+ is an alkaline earth metal so can form strong acid with hydroxide.
Conclusion-
From the above discussion of Ba2+ lewis structure, we can say that a dication is less important although they can form a stable form with dianion. The acidity and solubility are the physical and independent nature of a dication.
Also Read:
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Hi……I am Biswarup Chandra Dey, I have completed my Master’s in Chemistry from the Central University of Punjab. My area of specialization is Inorganic Chemistry. Chemistry is not all about reading line by line and memorizing, it is a concept to understand in an easy way and here I am sharing with you the concept about chemistry which I learn because knowledge is worth to share it.
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