Ionization energy is maximum for: MCQ with Answer and Explanation

Explanation:
PV = constant at constant T and n. This is Boyle's law. If either P or V changes, the other changes inversely.

Explanation:
The Contact process is used for the industrial manufacture of sulfuric acid. The key step is the oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3). This reaction is catalyzed by Vanadium pentoxide (V2O5). Platinum was historically used but was replaced by V2O5 because it is cheaper and less susceptible to poisoning.

Explanation:
Na+, Mg2+, Al3+, and F- are isoelectronic species, each having 10 electrons. For isoelectronic ions, the ionic radius decreases as the nuclear charge (number of protons) increases because the greater positive charge pulls the same number of electrons closer. F- has the lowest nuclear charge (9), so it has the largest radius.