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Q.

 Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R:
Assertion (A) : Helium and neon do not form compounds.
Reason (R) : Helium and neon have high ionisation energies and they do not contain d-orbitals in their valency shells. 
In the light of the above statements, choose the most appropriate answer from the options given below: 

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a

A is false but R is true

b

Both A and R are true, and R is not the correct explanation of A 

c

Both A and R are true, and R is correct explanation of A 

d

A is true but R is false 

answer is A.

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Detailed Solution

Helium has atomic number 2 and neon has 10. They have high ionization energy and also have no d-orbitals. So, they never form compounds.

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