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  • In which of the following pairs of molecules /ions ,both the species are not likely to exist ?Option: 1 <img alt="H_{2}^{-},He_{2}^{2+}" src="https:/

In which of the following pairs of molecules /ions ,both the species are not likely to exist ?

Option: 1

H_{2}^{-},He_{2}^{2+}


Option: 2

H_{2}^{+},He_{2}^{2-}


Option: 3

H_{2}^{-},He_{2}^{2-}


Option: 4

H_{2}^{2+},He_{2}


Answers (1)

best_answer

As we discussed in the concept

Bond Order -

Bond order is defined as one half the difference between the number of electrons present in the bonding and the antibonding orbitals.

- wherein

Bond \:Order=\frac{N_{b}-{N_{a}}}{2}

 

 If bond order is zero then molecule can not exist example-H22+=Bond order is zero 

He2= Bond order is zero 

 

Posted by

vinayak

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