Classification of Elements and Periodicity in Properties
Modern Periodic Law was given by which of the following scientists?
Which of the following elements has the most negative electron gain enthalpy?
The general valence shell electronic configuration of d-block elements is:
Which of the following oxide is amphoteric in nature?
Why is the first ionization enthalpy of Nitrogen ($N$) higher than that of Oxygen ($O$)?
Lithium shows a diagonal relationship with which of the following elements?
The correct decreasing order of ionic radii for the isoelectronic species $N^{3-}, O^{2-}, F^-$ is:
What is the IUPAC official name symbol for the element with atomic number 105?
Electronegativity increases across a period from left to right mainly due to:
An element with atomic number $Z = 35$ belongs to which block of the periodic table?
Which of the following represents the correct decreasing order of shielding/screening effect of subshells?
Elements present after Uranium (atomic number 92) in the periodic table are called:
Who formulated the 'Law of Triads' for classifying elements?
Which of the following species has the smallest size?
The general electronic configuration of f-block elements (Inner Transition elements) is:
On Pauling's electronegativity scale, which element is assigned the highest value of 4.0?
The halogen family belongs to which group in the modern periodic table?
Which statement regarding second ionization enthalpy ($IE_2$) compared to first ionization enthalpy ($IE_1$) is always correct?
Lothar Meyer plotted a periodic graph plotting atomic volume against which property of elements?
Beryllium ($Be$) shows a diagonal relationship with which of the following elements?