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The radius of electron in the first excited state of hydrogen atom is: (1) a 0 (2) 4a 0 (3) 2a 0 (4) 8a o
The electronic configuration of gadolinium (atomic no. 64) is: (1) [Xe]4s 8 5d 9 6s 2 (2) [Xe] 4s 1 5d 1 6s 2 (3) [Xe]4s 3 5d
Blending is an important unit operation in the chemical and process industries. It is employed in a wide variety of industries including the production of cement and gasoline. C
Advantages of ICP-AES method: The wide applicability of ICP-AES in the quantitative analysis of various materials can be attributed to the following advantages. Rapid a
Nucleophilic aromatic substitution is possible, but involves substitution of a typical leaving group rather than a hydrogen atom. Remembering that S N 2 and S N 1 mechanisms are no
which quantities are conserved in all oxidation-reduction reactions
Soaps - Oils and fats Soaps are the metallic salts of higher fatty acids like stearic, palmitic, oleic, etc. The potassium and sodium salts are the common soaps that are solubl
While solving lime sida numericals we calculate CACO3 equivalent .In this we do conc. In ppm×100/mol. Wt. ssomewhere we multiply 2 × m. Wt .so wht 2
Carbon and its allotropes Diamond - an extremely hard, transparent crystal, with the carbon atoms arranged in a tetrahedral lattice. A poor electrical conductor. An excelle
Why the current flow is always oppositte in direction to the conventional current direction? Ans) Availability of free electrons and application of potential difference are the c
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