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  • The correct order of second ionisation potential of carbon, nitrogen, oxygen and flourine is :Option: 1 <img alt="C>N>O>F" src="https://lear

The correct order of second ionisation potential of carbon, nitrogen, oxygen and flourine is :

Option: 1

C>N>O>F
 


Option: 2

O>N>F>C


Option: 3

O>F>N>C

 


Option: 4

F>O>N>C


Answers (1)

best_answer

 

Ionization Potential -

Ionization enthalpy is also known as ionisation potential (IP).Since it is minimum potential difference required to remove the outermost electron from an isolated gaseous atom to form gaseous ion.

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O^{+}=2s^{2}\: 2p^{3} – half-filled configuration has extra stability & F^{+}=2s^{2}2p^{4}partially filled less stable thus IE_{2} of O > F. Further, as nuclear charge increases the IE_{2} increases. So IE_{2} of N>C.

Therefore, Option(3) is correct.

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