Q42 of 55 Page 20

Match the following species with their corresponding ground state electronic configuration.

Atom / Ion Electronic configuration



Matching the following species with their corresponding ground state electronic configuration :


(i)Cu - (c) 1 S2 2s2 2P6 3s2 3p6 3d10 4s1


(ii) Cu2+ -- (d) 1s2 2s2 2p6 3s2 3p6 3d9


(iii)Zn2+ - (a) 1s2 2s2 2p6 3s2 3p6 3d10


(iv)Cr3+ - (e) 1 s2 2s2 2p6 3s2 3p6 3d3


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40

The effect of the uncertainty principle is significant only for the motion of microscopic particles and is negligible for the macroscopic particles. Justify the statement with the help of a suitable example.

 41 In

Hydrogen atom has only one electron, so mutual repulsion between electrons is absent. However, in multielectron atoms mutual repulsion between the electrons is significant. How does this affect the energy of an electron in the orbitals of the same principal quantum number in multielectron atoms?

 43

Match the quantum numbers with the information provided by these.

Quantum number Information provided



 44

Match the following rules with their statements :