What is the atomic number of Barium?
...What is the atomic number of Barium?
108
70
4
56
Correct answer is D
No explanation has been provided for this answer.
The process of extraction of iron from its ore is ...
What is the atomic number of Platinum? ...
The nucleus of a hydrogen atom consist of a? ...
Catalytic hydrogenation of alkenes produces compounds with the general formula ...
The cleansing effect of soap is low in acidic water because of ...
When steam is passed over white-hot coke, the products are ...