alleryThe modern periodic law states that the properties of elements are a periodic function of which property?
AAtomic mass
BAtomic number
CAtomic radius
DAtomic volume
Answer & Solution
Correct answer: B. Atomic number
1. Mendeleev's table, based on atomic mass, had anomalies such as argon before potassium.
2. Moseley showed atomic number is the fundamental property.
3. The modern periodic law states properties are a periodic function of atomic number.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 8 Periodic Classification of Elements "Modern Periodic Law", p.114_
Keep practising Unit 1C1: Periodic Trends in Atomic Properties
Browse all Unit 1C1: Periodic Trends in Atomic Properties questions for Tamil Nadu SSLC (Class 10), or explore more Chemistry topics.
Related questions
Using electronegativity values F = 4.0 and Na = 0.9 (approx 1.0), the Na-F bond is best deIn the metallurgy of iron, the charge of roasted ore, coke and limestone is taken in whichWhich of these alloys is a non-ferrous copper alloy made of copper and zinc?In the modern periodic table, the sixth period (atomic numbers 55 to 86) contains how manyA substance added to an ore to lower the fusion temperature and combine with the gangue isWhich separation method is most suitable for concentrating a light sulphide ore such as ziThe covalent radius of a hydrogen atom, given that the distance between the two nuclei in Why is the size of a cation always smaller than its parent neutral atom?