Chemistry

The maximum number of electrons that can be accommodated in the 3rd shell (n = 3) is:

During electrolysis of water, which gas is produced at the cathode?

What is the process called when a solid directly converts to gas without passing through the liquid state?

Noble gases are placed in which group of the periodic table?

What is the simplest hydrocarbon?

In the reaction $2Mg + O_2 \rightarrow 2MgO$, magnesium is: