The first one because some people might not believe that and others might believe that.
Acids are corrosive, which means they 'eat away' at other materials.
<span>C is the correct answer. Elements in the periodic table are grouped based on having similar properties. For example, the noble gases are all non-reactive and non-metallic. The electronic structure of an atom is the way the electrons are arranged within it, and this affects where they are located in the periodic table. The number of electrons in an element is the same as its group number in the periodic table (with the exception of Group 0).</span>
I think the answer is the moon
The atomic radius increases as you go down a group.
