has 56 electrons, the atomic number of X is :
56
58
28
54
Let number of electron in X is a
Atomic number of X is 54.
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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