Nobles gases, since they all have 8 e- on their last layer of electrons.
<span>the rapid expansion of matter from a state of extremely high density and temperature that according to current cosmological theories marked the origin of the universe.</span>
Answer:
#2.
Explanation:
Look at the charges. Both are positive, therefore both are cations.
Hydrogen i suppose is the right one
Answer:
C
Explanation:
Similar characteristics depend on columns.
Flourine and Chlorine are both halogens so they will have similar properties.
