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The hydride ions H- are isoelectronic with: (1) Li (2) He + (3) He (4) Be Ans: He
how can we refine metal by zone refining process
ClCH 2 CH 2 CH 2 COPh + Methanoic acid ----------------> CH2-(CH2)-CH2-CO-C 6 H 6
what is castner kellner process
what is heat of reaction
electrophilic substitution reactions and mechanisms
Q.Briefly describe about Nitrogen? Ans. Nitrogen is a gas that makes up approximately 79% of the atmosphere. It exists in the form of the diatomic molecule N 2 . In this f
name any 10 chemical compound used at homewith their molecular formula
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
GROUP 12: ZINC, CADMIUM, AND MERCURY Group 12 substance have the electron design ( n -1) d 10 ns 2 with n =4, 5 and 6 for Zn, Cd and Hg, respectively. They are formally pa
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