Show diagrammatically the electron distributions in a sodium atom and a sodium ion and also give their atomic number.
(N/A) Since the atomic number of a sodium atom is $11$,it has $11$ electrons.
$A$ positively charged sodium ion $(Na^+)$ is formed by the removal of one electron from a sodium atom.
So,a sodium ion has $11 - 1 = 10$ electrons in it.
Thus,the electronic distribution of a sodium ion will be $2, 8$.
The atomic number of an element is equal to the number of protons in its atom.
Since a sodium atom and a sodium ion contain the same number of protons,the atomic number of both is $11$.
$A$ positively charged sodium ion $(Na^+)$ is formed by the removal of one electron from a sodium atom.
So,a sodium ion has $11 - 1 = 10$ electrons in it.
Thus,the electronic distribution of a sodium ion will be $2, 8$.
The atomic number of an element is equal to the number of protons in its atom.
Since a sodium atom and a sodium ion contain the same number of protons,the atomic number of both is $11$.
Explore More
Similar Questions
For the following statements,write $T$ for True and $F$ for False.
$(a)$ $J$.$J$. Thomson proposed that the nucleus of an atom contains only nucleons.
$(b)$ $A$ neutron is formed by an electron and a proton combining together. Therefore,it is neutral.
$(c)$ The mass of an electron is about $\frac{1}{2000}$ times that of a proton.
$(d)$ An isotope of iodine is used for making tincture iodine,which is used as a medicine.
$(a)$ $J$.$J$. Thomson proposed that the nucleus of an atom contains only nucleons.
$(b)$ $A$ neutron is formed by an electron and a proton combining together. Therefore,it is neutral.
$(c)$ The mass of an electron is about $\frac{1}{2000}$ times that of a proton.
$(d)$ An isotope of iodine is used for making tincture iodine,which is used as a medicine.
Medium
View SolutionFill in the blanks in the following statements:
$(a)$ Rutherford's $\alpha$-particle scattering experiment led to the discovery of the ............
$(b)$ Isotopes have same ............ but different .............
$(c)$ Neon and chlorine have atomic numbers $10$ and $17$ respectively. Their valencies will be ............ and ............. respectively.
$(d)$ The electronic configuration of silicon is .......... and that of sulphur is ...........
$(a)$ Rutherford's $\alpha$-particle scattering experiment led to the discovery of the ............
$(b)$ Isotopes have same ............ but different .............
$(c)$ Neon and chlorine have atomic numbers $10$ and $17$ respectively. Their valencies will be ............ and ............. respectively.
$(d)$ The electronic configuration of silicon is .......... and that of sulphur is ...........
Medium
View SolutionGive a brief account of the development of the presently accepted model of the atom with the contributions made by different scientists. Write two features of this atomic model.
Medium
View SolutionMatch the names of the scientists given in column $A$ with their contributions towards the understanding of the atomic structure as given in column $B$.
Column $A$ Column $B$ $(a)$ Ernest Rutherford $(i)$ Indivisibility of atoms $(b)$ $J$.$J$. Thomson $(ii)$ Stationary orbits $(c)$ Dalton $(iii)$ Concept of nucleus $(d)$ Neils Bohr $(iv)$ Discovery of electrons $(e)$ James Chadwick $(v)$ Atomic number $(f)$ $E$. Goldstein $(vi)$ Neutron $(g)$ Mosley $(vii)$ Canal rays
| Column $A$ | Column $B$ |
| $(a)$ Ernest Rutherford | $(i)$ Indivisibility of atoms |
| $(b)$ $J$.$J$. Thomson | $(ii)$ Stationary orbits |
| $(c)$ Dalton | $(iii)$ Concept of nucleus |
| $(d)$ Neils Bohr | $(iv)$ Discovery of electrons |
| $(e)$ James Chadwick | $(v)$ Atomic number |
| $(f)$ $E$. Goldstein | $(vi)$ Neutron |
| $(g)$ Mosley | $(vii)$ Canal rays |
Medium
View SolutionWhich of the following species have $18$ electrons? $Ca^{2+}, K^{+}, Na, Cl^{-}, Ar$. Also,state the reason why the chemical properties of all isotopes of an element are similar.
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo