Medium
Which one of the following statements for $D.I.$ Mendeleev is incorrect?
- AAt the time he proposed the Periodic Table of elements,the structure of the atom was known.
- BThe element with atomic number $101$ is named after him.
- CHe invented an accurate barometer.
- DHe authored the textbook $-$ Principles of Chemistry.
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Similar Questions
Which of the following is a Dobereiner triad?
Medium
View SolutionGiven below are the atomic masses of the elements:
Element $Li$ $Na$ $Cl$ $K$ $Ca$ $Br$ $Sr$ $I$ $Ba$ Atomic Mass $(g \cdot mol^{-1})$ $7$ $23$ $35.5$ $39$ $40$ $80$ $88$ $127$ $137$
Which of the following does not form a $Dobereiner's$ triad?
| Element | $Li$ | $Na$ | $Cl$ | $K$ | $Ca$ | $Br$ | $Sr$ | $I$ | $Ba$ |
|---|---|---|---|---|---|---|---|---|---|
| Atomic Mass $(g \cdot mol^{-1})$ | $7$ | $23$ | $35.5$ | $39$ | $40$ | $80$ | $88$ | $127$ | $137$ |
Which of the following does not form a $Dobereiner's$ triad?
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View SolutionWhich elements were at the peaks of the Lothar Meyer curve?
Easy
View SolutionWhy do we need to classify elements?
Medium
View SolutionThe modern periodic table is based on the atomic number of the elements. The experiment which proved the significance of the atomic number was:
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