important questions on group 18 of p block element
Group 18 is the last group of the periodic table. Following are few important questions from this group
(1) Why the elements of group 18 are called noble gases?
(2) From what sources can the members of group 18 be obtained?
(3) Why members of group 18 have high ionisation enthalpy and large positive values of electron gain enthalpy?
(4) Why members of group 18 have low melting and boiling points?
(5) Structures and hybridisations of XeF2, XeF4, XeF6, XeO3, XeOF4
(6) Why He is used in diving apparatus and MRI systems?
(7) Uses of Argon and Neon.