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Class 12 Tuition > Learn Chemistry > CO is isoelectronic with (a) NO+ (b) N2 ...
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CO is isoelectronic with
(a) NO+
(b) N2                       
(c) SnCl2                  
(d) N02

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CO is isoelectronic with NO+ and N2. So, options (a) and (b) are the right answers. CO has 14 electrons, 8 from oxygen and 6 from carbon. NO has 15 electrons 8 from oxygen and 7 from nitogen. But, as it becomes NO+, it loses an electron and the number of electrons is 14. Similarly, N2 has 14 electrons,...
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CO is isoelectronic with NO+ and N2. So, options (a) and (b) are the right answers. CO has 14 electrons, 8 from oxygen and 6 from carbon. NO has 15 electrons 8 from oxygen and 7 from nitogen. But, as it becomes NO+, it loses an electron and the number of electrons is 14. Similarly, N2 has 14 electrons, 7 from each of the nitrogen atoms.

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NO+ and N2 is isoelwctric with CO (a, b) Numberof electrons in CO =14 Number of electrons in NO+ =14 Number of electrons in N2 = 14Number of electrons in SnCl2 = 84Number of electrons in NO–2 = 24
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NO+ and N2 is isoelwctric with CO (a, b) 

Numberof electrons in CO =14

Number of electrons in NO+ =14

Number of electrons in N2 = 14
Number of electrons in SnCl2 = 84
Number of electrons in NO–2 = 24 

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Chemistry tutor with 5 year experience in competitive exams like IIT JEE, NEET, etc.

CO is isoelectronic with both NO+ and N2 because both have 14 e- which are equal to CO e-s . For isoelectronic specie we see total e-s present in specie not only valence e-s.
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PGT CHEMISTRY 12 year experience teaching XI-XII Students

NO+
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PGT CHEMISTRY 12 year experience teaching XI-XII Students

N2
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Answer is both a and b. Reading: One is bonding character of co , no+, n2 is almost same.ie .both having pi back bonding. But n2 is not polar and has strong pi back bond since bond order is purely 3. In CO and no+ bond order not exactly 3. Even no+ has linear or bent geometry based on hybridization....
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Answer is both a and b. 

Reading:

   One is bonding character of co , no+, n2 is almost same.ie .both having pi back bonding. But n2 is not polar and has strong pi back bond since bond order is purely 3. In CO and no+ bond order not exactly 3. Even no+ has linear or bent geometry based on hybridization. 

Another reason is each having 14 electron 

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