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Q. Explain about Bohr atomic model? Bohr anticipated that hydrogen's single electron could orbit at only specific distances from the atom's nucleus. When the electron is in the
Safety in Preparation of Preparation of trimethyl: 1 Use a round-bottomed flask equipped with a Claisen head (lagged with glass-wool), Quickfit thermometer (very expensive!)
Which of the following has highest melting point: (1) BaCl 2 (2) MgCl 2 (3) Cacl 2
The number of neutron in tritium is : (1) 1 (2) 2 (4) 3 (4) 0 Ans: 2
A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent and
explain Berzelius hypothesis and contradiction of daltons hypothesis with an example
Lowest set of locants - IUPAC system of nomenclature while two or more substituents are present, then end of the parent chain that provides the lowest set of the locants is pre
1. why YbS and YbI2 are semiconducting solids but LaS and LaI2 show metallic character. 2. Why is aqueous solution of Eu2+ thermodynamically less susceptible to oxidation than any
Q. Describe about atomic number? It is significant to be able to obtain useful information from the periodic table. Beginning with the simplest element hydrogen the periodic ta
The compound in which cation is isoelectronic with anion is : (1) NaCl (2) CsF (3) NaI (4) K 2 S Ans: K 2 S
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