List of top Chemistry Questions on Classification of elements and periodicity in properties asked in KEAM

Which of the following statement is correct?

Which of the following statement is incorrect about the periodic trend?

Which of the following represents the correct increasing order of first ionization enthalpy for Ca, Ba, S, Se and Ar?

IUPAC official name for the element shows atomic number 110?

Which among the following elements shows same atomic radius?

Arrange the isoelectronic species in increasing order of ionic radius:
\(\text{Al}^{3+}\), \(\text{Na}^{+}\), \(\text{F}^{-}\), \(\text{O}^{2-}\)

How does the electron gain enthalpies vary across a period and down a group?

The element with positive electron gain enthalpy is