alleryThe modern periodic law states that properties of elements are a periodic function of their:
ANumbers of neutrons
BAtomic masses
CAtomic numbers
DDensities
Answer & Solution
Correct answer: C. Atomic numbers
1. After Moseley, atomic number was seen as the most fundamental property.
2. The modern periodic law was restated using atomic number.
3. It reads: properties of elements are a periodic function of their atomic numbers.
4. Rule out B: atomic mass is the basis of Mendeleev's older law.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 2 "Periodic Classification of Elements", p.29_
Keep practising Unit 1C1: Periodic Trends in Atomic Properties
Browse all Unit 1C1: Periodic Trends in Atomic Properties questions for Maharashtra SSC (Class 10), or explore more Chemistry topics.
Related questions
In which block of the modern periodic table are the nonmetals found?An element has the electronic configuration 2, 8, 2. To which group and period of the modeIn the halogen family (group 17), which member exists as a solid at room temperature?The tendency of a nonmetal atom to accept electrons and form an anion, which increases acrHow does the metallic character of elements change while moving down a group?The tendency of a metal atom to lose its valence electrons and form a cation is called itsAmong the period-2 elements Li, Be, B, C, N, O whose atomic radii are 152, 111, 88, 77, 74What happens to atomic size as one moves down a group of the modern periodic table?