Two or more elements combine to form a
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Aqueous solution of copper sulphate?
The pH of a solution, whose hydrogen ion concentration is 1 x 10 mole per litre, will be ____.
CuO + H2 ---> Cu + H2O. This equation is an example of
If the first and third members of a Dobereiner triad are Phosphorous and Antimony, the second member of this triad is
There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?
What is the name of the process where gas is directly converted to solids called?
Researchers at the University of Illinois have discovered new form of matter called Excitonium which was coined by ______ in the 1960’