The correct answer is the second option; sodium (Na) and potassium (K.)
Both sodium and potassium have the same number of valence electrons.
If it is heated while it is being compressed or held inside a container as such, the pressure build up while in the container and the pressure can become so much that the container will burst.
Answer:The elements have the same number of electrons in the outer ring so they react with the same substances
I hope this helped♡ I drew the realationship of variables
