19. Write the ground state electron configuration for: a) Р b) Al с) Са
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- Assume that the mixture of substances in drawing (a) undergoes a reaction. Which of the drawings (b)–(d) represent a product mixture consistent with the law of conservation of mass?How many electrons must a nitrogen atom, Z = 7, gain to attain a noble gas configuration?01. What may be the number of protons to number of neutrons ratio in our body?Explain Why?
- Define the term orbital and electroshell. Ralate electronWhat factors can make a compound called as a salt? Specifywhich of the following compounds are salts: CH4 ,NaF, NaOH, CaO, BaSO4 , HNO3 , NH3 , KBr?Assume that the mixture of substances in drawing (a) undergoes a reaction. Which of the drawings (b)–(d) rep- resents a product mixture consistent with the law of mass conservation?
- Provide a brief definition and a description of the significance of the following terms in NMR spectroscopy (1) CW-NMR spectroscopy (2) the nuclear Overhauser effect (3) the free induction decay(4) a 90o pulse(5) J coupling(6) distance geometry(7) intermediate exchange(8) SAR by NMR(9) the Larmour frequency(10) residual dipolar couplingsExplain Electronegativity values ?1. For each of the following elements write the element’s electron configuration. AL Ti Sr 2.Rank the following elements in order of increasing size: S, Si, O, Mg, F
