Per NCERT §3.3, the MODERN periodic law (post-Moseley 1913) states that properties of elements are a periodic function of which quantity?
ADensity
BAtomic volume
CAtomic mass
DAtomic NUMBER
Answer & Solution
Correct answer: D. Atomic NUMBER
Per NCERT §3.3, Moseley's X-ray spectra showed Z is more fundamental than atomic mass. Hence Modern Periodic Law uses atomic number.
Related questions
The most electronegative element on the periodic table is:Among Li, Na, K, Cs, the element with the highest first ionisation enthalpy is:Across a period from left to right, atomic radius generally:The modern periodic law arranges elements in order of:Per NCERT §3.3 note, how many naturally occurring elements does the Periodic Law currentlyPer NCERT Table 3.5, the IUPAC OFFICIAL name + symbol for Z = 104 is which?Per NCERT Problem 3.1, the IUPAC systematic name + symbol for the element with atomic numbPer NCERT Table 3.4, in IUPAC systematic nomenclature for Z > 100, what are the digit root