What is the atomic number of Sulfur?
...What is the atomic number of Sulfur?
11
16
49
60
Correct answer is B
No explanation has been provided for this answer.
What is the chemical symbol for Selenium? ...
Detergents have the general formula? ...
MO and X 2O represent the formula of oxides of elements M and X respectively . If M and X shoul...
The determination of heat of combustion is carried out with ...