The scientist who did not contribute in the construction of periodic table ?
Correct answer: D. Democritus
- A. Al-Razi
- B. Moseley
- C. Dobereiner
- D. Democritus
Explanation
Democritus proposed an early atomic concept but did not contribute to the construction of the periodic table, which involved later chemical classification and atomic-number studies. Students may choose a because Al-Razi was an early chemist, but his classification of substances represents an early contribution to chemical organisation.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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