Answer
Verified
392.7k+ views
Hint: We must know that the iso-electronic species are the ones which have similar electron configurations. Check the valence electron configuration.
Complete step by step answer:
Let’s start with discussing iso-electronic species. Iso-electronic species are the ones which have similar electron configurations. Like, \[{O^{2 - }}\] is having similar electronic configurations as \[{N^{ - 3}}\] which is \[1{s^2}2{s^2}2{p^6}\].
But how to check electronic configuration is the case of molecules? To check we need to check the valence electrons of the molecules. So, let’s check the valence electron of molecules \[C{O_2},{\text{ }}N{O_2},{\text{ }}N{O_2}^ - ,{\text{ }}C{N^ - },{\text{ }}CO{\text{ }} and {\text{ }}S{O_2}\]. For \[C{O_2}\] the number of valence electrons is $4+6+6$ which is $16$ valence electrons.
For \[N{O_2}\] the number of valence electrons is $5+6+6$ which is $17$ valence electrons. For \[N{O_2}^ - \] the number of valence electrons is $5+6+6+1$ which is 18. For \[C{N^ - }\] the number of valence electrons is $4+5+1$ which is $10$. For \[CO\] the number of valence electrons is $4+6$ which is $10$ valence electrons. For \[S{O_2}\] the number of valence electrons is $6+6+6$ which is $18$ valence electrons.
So, the only two with similar valence electron configurations are \[CO\] and \[C{N^ - }\] which are $10$ valence electrons each.
Hence, the answer to this question is C..
\[C{N^ - }and{\text{ }}CO\].
Note: Most of the times we get confused between iso-electronic species and iso-electric point. Both the terms are totally different in meaning, iso-electronic species are the one having the same electronic configuration whereas the iso-electric point is the point at which the net charge of any solution becomes 0.
Complete step by step answer:
Let’s start with discussing iso-electronic species. Iso-electronic species are the ones which have similar electron configurations. Like, \[{O^{2 - }}\] is having similar electronic configurations as \[{N^{ - 3}}\] which is \[1{s^2}2{s^2}2{p^6}\].
But how to check electronic configuration is the case of molecules? To check we need to check the valence electrons of the molecules. So, let’s check the valence electron of molecules \[C{O_2},{\text{ }}N{O_2},{\text{ }}N{O_2}^ - ,{\text{ }}C{N^ - },{\text{ }}CO{\text{ }} and {\text{ }}S{O_2}\]. For \[C{O_2}\] the number of valence electrons is $4+6+6$ which is $16$ valence electrons.
For \[N{O_2}\] the number of valence electrons is $5+6+6$ which is $17$ valence electrons. For \[N{O_2}^ - \] the number of valence electrons is $5+6+6+1$ which is 18. For \[C{N^ - }\] the number of valence electrons is $4+5+1$ which is $10$. For \[CO\] the number of valence electrons is $4+6$ which is $10$ valence electrons. For \[S{O_2}\] the number of valence electrons is $6+6+6$ which is $18$ valence electrons.
So, the only two with similar valence electron configurations are \[CO\] and \[C{N^ - }\] which are $10$ valence electrons each.
Hence, the answer to this question is C..
\[C{N^ - }and{\text{ }}CO\].
Note: Most of the times we get confused between iso-electronic species and iso-electric point. Both the terms are totally different in meaning, iso-electronic species are the one having the same electronic configuration whereas the iso-electric point is the point at which the net charge of any solution becomes 0.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Two charges are placed at a certain distance apart class 12 physics CBSE
Difference Between Plant Cell and Animal Cell
What organs are located on the left side of your body class 11 biology CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
The planet nearest to earth is A Mercury B Venus C class 6 social science CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
What is BLO What is the full form of BLO class 8 social science CBSE