The valence "s” electrons act as inner core electrons due to poor shielding of "d” and "f”. This is known as the inert pair effect.
The valence "s” electrons act as inner core electrons due to poor shielding of "d” and "f”. This is known as the inert pair effect.
The correct option is A True
Yes, this is true.
Inert pair effect is the name given to tendency of electrons present in the outer most s sub shell of post-transition metals, like Pb, Bi etc. to not undergo ionisation, and to remain unshared. This is most stated in Groups 13, 14 and 15.
A possible given explanation is that due to presence of f-subshell electrons are too diffused, due to the shape of the f orbitals, to effectively shield the s electrons from the pull of the nucleus.
A good example would be the elements of Group 13. Aluminium in +1 state is unknown, and the stability of +1 oxidation state increases as we go down the group. Thallium is most stable in +1 oxidation state, and compounds of Thallium in +3 oxidation state are known to be very strong oxidising agents, and have a tendency to reduce quickly to +1 state
True
Yes, this is true.
Inert pair effect is the name given to tendency of electrons present in the outer most s sub shell of post-transition metals, like Pb, Bi etc. to not undergo ionisation, and to remain unshared. This is most stated in Groups 13, 14 and 15.
A possible given explanation is that due to presence of f-subshell electrons are too diffused, due to the shape of the f orbitals, to effectively shield the s electrons from the pull of the nucleus.
A good example would be the elements of Group 13. Aluminium in +1 state is unknown, and the stability of +1 oxidation state increases as we go down the group. Thallium is most stable in +1 oxidation state, and compounds of Thallium in +3 oxidation state are known to be very strong oxidising agents, and have a tendency to reduce quickly to +1 state
