Please explain what is pseudo noble gas configuration.?

Question

Answer

18 electrons... as in Zn +2,Cd +2,Hg +2...etc..

Answer

Like zn cd Hg it play a role in chapter chemical bonding

Answer

Elements other than noble gas elements  containing 18 valence electrons

Answer

18electrons .....

Answer

Kisi metal ion ka configuration agar Nobel gas ki tarah hota to use pseudo Nobel gal configuration kahte h

as like Al3+ ka Neon ki tarah hota h

Answer

Pseudo inert gas configuration means having 18 electrons instead of 8 electrons in (n-1) shell electronic configuration after gaining or losing electrons and all d block elements including zinc group have this

Answer

Pseudo Noble Gas Configuration

Pseudo noble gas configuration refers to the electron configuration of an atom or ion that is similar to that of a noble gas. Noble gases, such as helium, neon, and argon, have stable electron configurations characterized by completely filled electron orbitals. This stability arises from the fact that the noble gases have full valence electron shells, making them unreactive and chemically inert.

Explanation

Atoms tend to gain, lose, or share electrons in order to achieve a more stable electron configuration, similar to the noble gases. This stability is achieved by filling or emptying the outermost electron shell, also known as the valence shell. By doing so, atoms can reach a lower energy state and become more stable.

Valence Electrons

Valence electrons are the electrons in the outermost energy level of an atom. These electrons are involved in chemical bonding and determine the reactivity of an atom. The noble gases have a completely filled valence shell, which is why they are unreactive. For example, helium has a stable configuration of 2 electrons in its first energy level, while neon has a stable configuration of 2 electrons in its first energy level and 8 electrons in its second energy level.

Pseudo Noble Gas Configuration

Some atoms can achieve a similar level of stability by gaining or losing electrons to attain the electron configuration of a noble gas. This is known as a pseudo noble gas configuration. Pseudo noble gas configurations are commonly observed in transition metals and their ions.

Example

Let's take the example of chromium (Cr) with the electron configuration [Ar] 3d^5 4s^1. Chromium has an atomic number of 24, meaning it has 24 electrons. The noble gas before chromium is argon, which has an electron configuration of [Ne] 3s^2 3p^6.

To achieve a more stable configuration, chromium can lose its 4s^1 electron and achieve a pseudo noble gas configuration by having the same electron configuration as argon. This gives chromium a configuration of [Ar] 3d^5, which is a more stable configuration.

Conclusion

Pseudo noble gas configuration is a concept used to describe the electron configuration of an atom or ion that mimics the stable electron configuration of a noble gas. By achieving a pseudo noble gas configuration, atoms can attain a more stable state and become less reactive. This concept is particularly relevant in explaining the properties and behavior of transition metals and their ions.

Answer

Elements having filled d orbital, along with s and p orbitals are said be elements having pseudo inert configuration.
This is called pseudo inert configuration because these elements are having 18 electrons in their valence shell instead of having 8 electrons (inert gas configuration).
Cations with pseudo inert gas configuration i.e,
ns2p6d10 or with inert pair configuration i.e;
d10(n+1)s2, have greater ENC (Effective Nuclear Charge) than cations with noble gas configuration, ns2p6.
For Example: Ag+

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