What is the total number of electrons in the second principal energy level of calcium in the ground state? a) 6 c) 8 b) 2 d) 18 The number of protons in an atom of 36c1 is c) 35 a) 17 b) 18 d) 36 What is the maximum number of electrons that can occupy the third principal energy level? a) 8 b) 10 c) 18 d) 32

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Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.