write the molecular formulae of compound of the following elemets with hydrogen by referring to the meendeleev periodic table. C, S, Br, As, F, O N, Cl.
Answers
Explanation:
Kramskoy) was born in Tobolsk, in Western Siberia. His chief contribution to chemistry was the establishment of the periodic system of elements. Mendeleev was one of a number of independent discoverers of the periodic law in the 1860s--that number ranging from one [Leicester 1948] to six [van Spronsen 1969] depending on the criteria one adopts. Mendeleev's formulation was clearly superior in several respects to the work of contemporary classifiers: it was the clearest, most consistent, and most systematic formulation, and Mendeleev made several testable predictions based on it. It was not, however, free from error. Scientists, even great scientists, trying to see further than others have in the past, do not always see the whole picture clearly. As noted below, Mendeleev himself corrected some of the errors within a few years; others persisted well into the 20th century.
This table and the accompanying observations were first presented to the Russian Chemical Society in March 1869. (Actually, Mendeleev was ill, and his colleague Nikolai Menshutkin presented his paper [Menschutkin 1934].) The paper was published in the first volume of the new society's journal. That same year, a German abstract of the paper, consisting of the table and eight comments, was published in Zeitschrift für Chemie. The German abstract was the vehicle by which Mendeleev's ideas reached chemists working in Western Europe. An English translation of that German abstract is presented here. View a manuscript draft of the table.
Answer:
C=CH4 Methane (RH4)
S=H2S Hydrogen Sulphide(RH2)
Br=HBr Hydrogen Bromide / Hydrobromic Acid(RH)
As=AsH3 Arsenic Hydride(RH3)
F=HF Hydrogen Fluoride / Hydrofluoric acid(RH)
O=H2O Dihydrogen Oxide / Water(RH2)
N=NH3 Ammonia(RH3)
Cl=HCl Hydrogen Chloride / Hydrochloric Acid(RH)
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