Chemical Science,, Chemical Engineering

What is wrong with each of the following attempts to write an electron
configuration? Justify your answer with suitable explanation.
(a) 1s22s3
(b) 1s22s22p23s2
(c) 1s22s23s2
(d) 1s22s22p63s23d10
Q2 Given the following percent compositions, determine the empirical
(a) 47.26% Cu, 52.74% Cl
(b) 40.27% K, 26.78% Cr and 32.96% O
Q3 Discuss the classification of elements in the periodic table.
Q4 Explain different types of chemical bonds. [5]
Q5 Explain with the mechanism how the following buffer solutions maintain
fairly constant pH, even when a small amount of acid or alkali is added
to it.
(a) Acidic buffer (CH3COOH + CH3COONa) and
(b) Basic buffer (NH4OH + NH4Cl)
Posted Date: 11/26/2012 8:12:45 AM | Location : Oman

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