Which of the following represents the correct trend for the mentioned property ? A. F > P > S > B \ \ \ - \ \ \ First Ionization Energy B. Cl > F > S > P \ \ \ - \ \ \ Electron Affinity C. K > Al > Mg > B \ \ \ - \ \ \ Metallic character D. K _ 2 O > Na _ 2 O > MgO > Al _ 2 O _ 3 \ \ \ - \ \ \ Basic character Choose the correct answer from the options given below :
B. A, B and D only
A. F > P > S > B (IE₁): F has highest IE₁, P > S due to half-filled 3p^3 stability, B has lowest. Correct B. Cl > F > S > P (EA): Cl has highest EA (F smaller, more repulsion), S > P (half-filled p-orbital). Correct C. K > Al > Mg > B (Metallic character): Incorrect. Mg (Group 2) is more metallic than Al (Group 13) in same period. Correct order: K > Mg > Al > B D. K_2O > Na_2O > MgO > Al_2O_3 (Basic character): Follows electropositive nature. Al_2O_3 is amphoteric. Correct Correct statements: A, B and D only.
Related: Chemistry — Classification of Elements and Periodicity in Properties · All PYQ Banks