Answer :

a.


Here number of protons = the number of electrons = 6


Since, atomic number of an atom = the number of protons


Hence the atomic number of the atom = 6


We know that mass number = number of protons + number of neutrons


Mass number = 6 + 6 =12


Electronic configuration of the atom : -


K shell - 2 electrons


L shell – 4 electrons



Here number of protons = the number of electrons = 7


Since, atomic number of an atom = the number of protons


Hence the atomic number of the atom = 7


We know that mass number = number of protons + number of neutrons


Mass number = 7 + 8 =15


Electronic configuration of the atom : -


K shell - 2 electrons


L shell – 5 electrons



Here number of protons = the number of electrons = 6


Since, atomic number of an atom = the number of protons


Hence the atomic number of the atom = 6


We know that mass number = number of protons + number of neutrons


Mass number = 6 + 8 =14


Electronic configuration of the atom : -


K shell - 2 electrons


L shell – 4 electrons



Here number of protons = the number of electrons = 8


Since, atomic number of an atom = the number of protons


Hence the atomic number of the atom = 8


We know that mass number = number of protons + number of neutrons


Mass number = 8 + 8 =16


Electronic configuration of the atom: -


K shell - 2 electrons


L shell – 6 electrons


b). Isotopes – These are the chemical species having the same atomic number but different mass numbers.


In the above given atoms A and C have the same atomic number and differ only in the matter of number of neutrons present in their respective nucleus.


Hence, atom A and C are isotopes.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Foundation | Structure of an AtomFoundation | Structure of an AtomFoundation | Structure of an Atom31 mins
NCERT | Let's Revise The AtomNCERT | Let's Revise The AtomNCERT | Let's Revise The Atom28 mins
Master Pradeep's H.O.T.S. on AtomsMaster Pradeep's H.O.T.S. on AtomsMaster Pradeep's H.O.T.S. on Atoms47 mins
How Radioactivity Works?How Radioactivity Works?How Radioactivity Works?29 mins
Electronic ConfigurationElectronic ConfigurationElectronic Configuration34 mins
Quiz | Bohr's-Bury Rule and ValencyQuiz | Bohr's-Bury Rule and ValencyQuiz | Bohr's-Bury Rule and Valency62 mins
Atomic NumberAtomic NumberAtomic Number46 mins
Champ Quiz | Important Questions of AtomChamp Quiz | Important Questions of AtomChamp Quiz | Important Questions of Atom41 mins
Learn How to Write The FormulaLearn How to Write The FormulaLearn How to Write The Formula19 mins
What an Atom holds?What an Atom holds?What an Atom holds?41 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

Prepare a table fKerala Board Chemistry Part I

Bohr models of atKerala Board Chemistry Part I

Symbols (not realKerala Board Chemistry Part I