The number of electrons in penultimate shell of S is
6
8
2
16
As we learnt
Electronic configuration of Sulphur (16) -
-
Second last shell is also known as penultimate shell which contains 8 electrons in Sulphur.
50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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