In which year did Dobereiner propose his Law of Triads?

এই অধ্যায়ের আরও প্রশ্ন

• C-04-Q004According to Dobereiner's Law of Triads, the atomic mass of the middle element is approximately—
• C-04-Q005Which trio did Dobereiner first identify?
• C-04-Q006Who proposed the Law of Octaves?
• C-04-Q007According to the Law of Octaves, properties recur with every—
• C-04-Q008Newlands arranged the elements according to—
• C-04-Q009In 1869, who published a periodic table grouping elements with similar properties?
• C-04-Q010Mendeleev's periodic law states that physical and chemical properties of elements recur periodically as—
• C-04-Q011How many elements did Mendeleev arrange in his table?
• C-04-Q012Mendeleev's table consisted of—
• C-04-Q013Mendeleev's correct forecast about the existence of new elements is shown by—