Mendeleev's Periodic Law
Mendeleev's periodic law states that properties of elements are periodic functions of their:
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About This Question
- Subject
- chemistry
- Chapter
- classification of elements and periodicity in properties
- Topic
- mendeleev's periodic law
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Atomic mass
Dmitri Mendeleev formulated the First Periodic Law stating that the chemical and physical properties of elements are a periodic function of their Atomic Masses.
- He arranged elements in order of increasing atomic mass while keeping elements with similar properties in the same vertical column (group).
- The Modern Periodic Law (proposed by Henry Moseley) later corrected this, stating that properties are periodic functions of Atomic Number (Z).
This easy difficulty chemistry question is from the chapter classification of elements and periodicity in properties, covering the topic of mendeleev's periodic law. It appeared in the 2025 exam.
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