First slide
Electronic configuration and Atomic , physical properties

A, X, Y, B and Q are the elements belonging to 16th group of Modern periodic table. The correct trend of density in these elements is A < X < Y < B < Q. The element ‘A’ in the sequence is


Atomic radius… O<S<Se<Te<Po ;

Ionization enthalpyO>S>Se>Te>Po ;

Melting pointO<S<Se<Po<Te ;

Boiling point….O<S<Se<Po<Te ;

Density……….O<S<Se<Te<Po ;

Electronegativity……O>S>Se>Te>Po ;

Electron gain enthalpy …. S>Se>Te>Po>O ;

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