### (iv) ( ^{224}\text{Ra} \rightarrow , ? \rightarrow ^{208}\text{Ti} ) * Ra (Z=88), Ti (Z=22) 1. Mass number: [ 224 - 4x = 208 \implies ____ ________ ______ ______ ______ ______ ______ _________ ___.
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What are amperometric titrations? Draw common types of curves obtained in amperometric titrations. What will be the shape of the curve in bioamperometry for the titration of iodine by thiosulphate?
Indium and Cadmium ions in 0.1 M HCl give peaks at potentials -0.557 V and -0.597 V by differential pulse polarographic analysis. When a standard solution containing 0.4 ppm of indium is analysed, it gave peak current (in arbitrary units) corresponding to 100.25 at -0.557 V and 43.75 at -0.597 V. A standard solution containing 0.4 ppm of Cd gave ip 29.52 at -0.557 V and 64.8 at -0.597 V. What is the concentration of indium and cadmium in a sample if the peak current is 190 at -0.557 V and 120 at -0.597 V.
What information does the energy dispersive spectroscopy (EDS) provide? Write any three applications of EDS.
Consider the following electrochemical cell
How does atomic force microscopy (AFM) work? Explain briefly with their applications.