How is an atom represented using notation? Provide an example.
(N/A) An atom of an element $X$ is represented by placing the mass number $A$ as a left superscript and the atomic number $Z$ as a left subscript.
The notation is written as ${ }_{Z}^{A}X$.
Here,$X$ is the element symbol,$A$ is the mass number,and $Z$ is the atomic number.
Example: For sodium $(Na)$,the atomic number $(Z)$ is $11$ and the mass number $(A)$ is $23$.
Therefore,the notation is ${ }_{11}^{23}Na$.
The notation is written as ${ }_{Z}^{A}X$.
Here,$X$ is the element symbol,$A$ is the mass number,and $Z$ is the atomic number.
Example: For sodium $(Na)$,the atomic number $(Z)$ is $11$ and the mass number $(A)$ is $23$.
Therefore,the notation is ${ }_{11}^{23}Na$.
Explore More
Similar Questions
An element has an electronic configuration of $2, 8, 18, 1$. If its atomic weight is $63$,then how many neutrons will be present in its nucleus?
Easy
View SolutionCalculate the number of electrons,protons,and neutrons in $Cl_{2}$,$Cl$,and $Cl^{-}$. (Given for $Cl$: $Z = 17$ and $A = 35$)
Easy
View SolutionWhich one of the following sets of ions represents a collection of isoelectronic species? (Given: Atomic Number: $F: 9, Cl: 17, Na: 11, Mg: 12, Al: 13, K: 19, Ca: 20, Sc: 21$)
Isotopes of the same element have the same number of
Medium
View SolutionWhat do you understand by isoelectronic species? Name a species that will be isoelectronic with each of the following atoms or ions.
$(i)$ $F^{-}$
$(ii)$ $Ar$
$(iii)$ $Mg^{2+}$
$(iv)$ $Rb^{+}$
$(i)$ $F^{-}$
$(ii)$ $Ar$
$(iii)$ $Mg^{2+}$
$(iv)$ $Rb^{+}$
Vedclass 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