Jahn-Teller Distortion(tetragonal distortion)

Which configuration exhibits strong Jahn-Teller distortion in strong ligand field?

In a tetragonal crystal

The disturbance or distortion in the transmission and processing of message signals is called

Compounds [Cu(H_2O)_6]^(2+)(A) and [Ti(H_2O)_6]^(3+) (B) exhibit tetragonal elongation and tetragonal compression,respectively.The unpaired electron A and B are found respectively, in orbitals,

Which of the following configuration will not give John- teller distortion ( In both HS & LS complexes ) ?

What is meant by attenuation and distortion?