Question

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$what \: is \: electronic \: confugration \\ plz \: explain \\ no \: copied \: from \: google \\ give \: answer \: in \: your \: own \: words$

Answer 1

Hey dear !!!

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⚫ Electronic Configuration

Electronic Configuration means the number of electrons of an elements arranged with respect to thier shells i.e. K,L,M,N

We know that the first shell complete thier octate when 2 electrons gained.After that other shells complete their octate if they gain 8 electrons.

If an Element complete the first shell or we can say that it completed the required number of electrons i.e. 2 then the others electrons will be written in the next shells i.e.8

[ Not :First shell = >Maximum number of electrons is 2
Second and rest shell = > Maximum number of electrons is 8 ]

⚫ Take an example to understand :

Na (Sodium)
➡ Atomic number = 11

Electronic Configuration = 2,8,1

Here ,

First shell => 2

Second shell. => 8

Third shell(other shell) = 1

Ca ( calcium).➡ Atomic number = 20

Electronic Configuration => 2,8,8,2

First shell => 2

Second shell => 8

Third shell => 8

Fourth shell (other shell ) = 2

I hope this will help you in understanding .. what is electronic Configuration and how to write it !!

Thanks ✌✌✌✌✌

Answer 2

$\bold{\underline{\large{Answer}}}$

$\bold{\underline{\: Electronic \: configuration\: \colon}}$

The distribution of electrons in the atom at different shells or orbitals in a lowest level to highest energy level.

Atomic orbitals or shells : These are regions in which electron are divided into lower to higher level of energy.

Orbits or shells

K , L , M , N to Q

Here first shell is denoted by K having a lowest energy level.

How we find accomodation of electron in each shell of atom ?

The energy level is defined by the formula 2n²

$\begin{center} \begin{tabular}{|c|c|c|c|} \cline{1-4} shell & n & 2n^{2} & Energy \\ K & 1 & 2(1)^{2} & 2 \\ L & 2 & 2(2)^{2} & 8\\ M & 3 & 2(3)^{2} & 18\\ N & 4 & 2(4)^{2} & 32\\ \cline{1-4} \end{tabular} \end{center}$

n = position or number of electron

Note : according to rule first shell take only 2 electrons and at different level first we fill 8 - 8 electrons in each shell .

For example :

1) Sodium

Atomic number : 11

Electronic configuration as follows :

$\begin{center} \begin{tabular}{|c|c|c|c|c|} \cline{1-5} Shell & K & L & M & N \\ en- & 2 & 8 & 1 & - \\ \cline{1-5} \end{tabular} \end{center}$

2) Element : Calcium

Atomic number : 20

$\begin{center} \begin{tabular}{|c|c|c|c|c|} \cline{1-5} Shell & K & L & M & N \\ en- & 2 & 8 & 8 & 2 \\ \cline{1-5} \end{tabular} \end{center}$

Clearly you get how we distribute electron in each and every shell.

So, electronic configuration is a way by which we distribute the electron in shells in a manner to lower than higher energy levels .

$\bold{\large{Thanks}}$