14 JEE Main 2019 Classification of Elements and Periodicity in Properties previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2019 previous-year questions from the Classification of Elements and Periodicity in Properties chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Classification of Elements and Periodicity in Properties chapter hub.
The IUPAC symbol for the element with atomic number 119 would be:
The element with Z = 120 (not yet discovered) will be a/an
The size of the iso-electronic species C l - , Ar and C a 2 + is affected by:
The correct order of atomic radii is:
The group number, number of valence electrons, and valency of an element with atomic number 15 , respectively, are:
The correct option with respect to the Pauling electronegativity values of the elements is:
The element that does not show catenation is
In comparison to boron, berylium has:
The correct order of the atomic radii of C, Cs, Al, and S is:
In general, the properties that decrease and increase down a group in the periodic table, respectively, are :
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