The law of triads was proposed by
Correct answer: A. Dobereiner
- A. Dobereiner
- B. Newlands
- C. Lothar Meyer
- D. Chancourtois
Explanation
The correct answer is Dobereiner, who proposed the Law of Triads in the early 19th century. This was one of the first attempts to classify elements based on their chemical properties and atomic weights, grouping them into sets of three where the middle element had properties that were an average of the other two. The other options refer to different scientists who contributed to the development of the periodic table: Newlands with his Law of Octaves, Meyer with his atomic volume plots, and Chancourtois with his telluric helix.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Periodic Properties and Trends questions
In the Mendeleev's periodic table, elements are arranged in the increasing order of their
The atomic mass of the middle element is the average of the atomic masses of other two elements. This is a statement of
2. Law of octaves was proposed by
Lothar Meyer plotted a graph showing variation of
Which of the following remains unchanged on descending a group in the periodic table?
Which group contains elements that exist as monoatomic molecules?