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The hydride ions H- are isoelectronic with: (1) Li (2) He + (3) He (4) Be Ans: He
why must the mass relative of atom refer to atomic mass of C
Fe3+ + e ------> Fe2+
Coordination number and geometry Binary compounds are ones with two different elements present. 'Simple' crystal structures can be classed as ones in which each atom (or
Nitrous acid (HNO2) is an unstable compound when prepared by the following reaction: HCl (g) + NaNO2 (s) ? HNO2 (l) + NaCl (s). As the product of the above reaction is unstable, t
about occurence,properties of the following metal copper.gold,mercury
What is purity criteria.
account for the effects of solvents on the wavelength of absorption of the acetone in terms of the hydrogen bonding properties of the solvent used
What is basically Gibb''s free energy change? Ans) The energy associated with a chemical reaction that can be used to do work. The free energy of a system is the sum of its entha
Mesomeric forms are the possible locations of electrons at a single instant, if you get what I mean. Like, an adjacent double and single bond in a molecule. The resonance form, how
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