What is the atomic number of Mercury?
...What is the atomic number of Mercury?
77
80
85
90
Correct answer is B
No explanation has been provided for this answer.
CHCl3 + Cl2 → HCl + CCl4. The reaction above is an example of?...
The nucleus of an atom consists of? ...
Vinegar is an aqueous solution of? ...
Figure 1 above shows part of the periodic Table which of the elements belongs to the p-block?...