Question

11. Why are atoms with half filled and fully filled orbital extremely

stable?

12. The electron energy in hydrogen atom is given by

En = (-2.18 x 10-18)/n2

J. Calculate the energy required to remove the

electron completely from n = 2 orbit?

13. Explain why Cations are smaller and anions are larger than the

parent atom?

14. State Hess’s Law. What is the basis of Hess’s Law?

15. When ΔH>0 and ΔS<0, reaction is never spontaneous. Explain.​

Answer 1

Answer:

14. The heat of any reaction ΔH∘f for a specific reaction is equal to the sum of the heats of reaction for any set of reactions which in sum are equivalent to the overall reaction.