Question

Write electronic configuration of of first 10 elements

Answer 1

Answer:

ELECTRONIC

CONFIGURATION----

it is the arrangement of electrons in particular orbital according to their energy level.

it is based on 3 rules----

1》》》

paulie's

rule--

according to it number of electrons in an orbital can have same values for all the four Quantum numbers.

2》》》

Afbau

rule ----

according to it electron come first to that orbital which have lower energy.

3》》》

Hund's

rule----

according to it electrons are singally filled in each orbital after that pairing takes place.

Here are the the symbols and electronic configuration of first 10 elements of modern periodic table.

$h = {1s}^{1} \\ he = {1s}^{2} \\ li = {(he)}^{2} \: \: {2s}^{1} \\ be = {(he)}^{2} \: \: {2s}^{2} \\ b = \: {(he)}^{2} \: \: {2s}^{2} \: {2p}^{1} \\ c = \: {(he)}^{2} \: \: {2s}^{2} {2p}^{2} \\ n = {(he)}^{2} \: \: {2s}^{2} {2p}^{3} \\ o = {(he)}^{2} \: \: {2s}^{2} {2p}^{4} \\ f = {(he)}^{2} \: \: {2s}^{2} {2p}^{5} \\ ne = {(he)}^{2} \: \: {2s}^{2} \: {2p}^{6}$

Answer 2

Question:

Write electronic configuration of of first 10 elements

Answer:

This table consists of element name , symbol , valency , atomic number and electronic configuration

$\boxed {\begin{array}{|c|c|c|c|cccc|}\cline {1-8}\sf Element & \sf Symbol & \sf Valency & \sf{Atomic\:Number} & & \sf{Electron} & \sf Configuration & \\ \cline {5-8} &&&&\bf K&\bf L &\bf M&\bf N \\ \cline {1-8}\rm Hydrogen &\sf H & 1 & 1 & 1 &&& \\ \cline {1-8}\rm Helium &\sf He & 0 & 2 & 2 &&& \\ \cline {1-8}\rm Lithium &\sf Li & 1& 3 &2 &1 && \\ \cline {1-8}\rm Beryllium &\sf Be & 2 & 4 & 2 & 2 && \\ \cline {1-8}\rm Boron &\sf B & 3 & 5 & 2 & 3 && \\ \cline {1-8}\end {array}}$

$\boxed {\begin{array}{|c|c|c|c|cccc|}\cline {1-8}\sf Element & \sf Symbol & \sf Valency & \sf{Atomic\:Number} & & \sf{Electron} & \sf Configuration & \\ \cline {5-8} &&&&\bf K&\bf L &\bf M&\bf N\\ \cline {1-8}\rm Carbon & \sf C & 4 & 6 & 2 & 4 && \\ \cline {1-8}\rm Nitrogen &\sf N & 3 & 7 & 2 & 5 && \\ \cline {1-8}\rm Oxygen &\sf O & 2 & 8 & 2 & 6 && \\ \cline {1-8}\rm Fluorine &\sf F & 1 & 9 & 2 & 7 && \\ \cline {1-8}\rm Neon & \sf Ne & 0 & 10 & 2 & 8 && \\ \cline {1-8}\end {array}}$

$\boxed {\begin{array}{|c|c|c|c|cccc|}\cline {1-8}\sf Element & \sf Symbol & \sf Valency & \sf{Atomic\:Number} & & \sf{Electron} & \sf Configuration & \\ \cline {5-8} &&&&\bf K&\bf L &\bf M&\bf N\\ Sodium &\sf Na & 1 & 11 & 2 & 8 & 1 &\\ \cline {1-8}\rm Magnesium &\sf Mg & 2 & 12 & 2 & 8 & 2 & \\ \cline {1-8}\rm Aluminium &\sf Al & 3 & 13 & 2 & 8 & 3 & \\ \cline{1-8}\rm Silicon &\sf Si & 4 & 14 & 2 & 8 & 4 & \\ \cline {1-8}\rm Phosphorus &\sf P & 3 & 15 & 2 & 8 & 7 & \\ \cline {1-8}\end {array}}$

$\boxed {\begin{array}{|c|c|c|c|cccc|}\cline {1-8}\sf Element & \sf Symbol & \sf Valency & \sf{Atomic\:Number} & & \sf{Electron} & \sf Configuration & \\ \cline {5-8} &&&&\bf K&\bf L &\bf M&\bf N \\ \rm Sulphur &\sf S & 2 & 16 & 2 & 8 & 8 & \\ \cline{1-8}\rm Chlorine &\sf Cl & 1 & 17 & 2 & 8 & 8 &1 \\ \cline {1-8}\rm Argon &\sf Ar & 0 & 18 & 2 & 8 & 8 & 2 \\ \cline {1-8}\rm Potassium &\sf K & 1 & 19 & 2 & 8 & 8 &3 \\ \cline {1-8}\rm Calcium &\sf Ca & 2 & 20 & 2 & 8 & 8 & 4 \\ \cline{1-8} \end {array}}$

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