Per NCERT §3.3 note, how many naturally occurring elements does the Periodic Law currently apply to (including neptunium + plutonium found in pitchblende)?
A118
B112
C94
D103
Answer & Solution
Correct answer: C. 94
Per NCERT §3.3, the law applies to 94 naturally occurring elements; the rest are man-made. Up to 118 are now known.
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 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 rootPer NCERT §3.3, the IUPAC system numbers the groups in the modern table from which range,