Choose the INCORRECT Statement About the Inert-Pair Effect

question 114

Multiple Choice

Choose the INCORRECT statement about the inert-pair effect.

• A)It explains why gallium tends to have the +3 oxidation state but thallium is most often in the +1 state.
• B)It can be explained that the bond energies and lattice energies associated with the atoms and ions at the bottom of the groups are not sufficiently large to off-set the ionization energies of the ns² electron.
• C)The effect is manifested by ions not losing the outermost pair of electrons.
• D)Of the group 14 (4A)metals,only tin exhibits the inert-pair effect.
• E)For any group,the inert pair effect is more prominent as the period number increases.