What do elements in the first two columns of the periodic table have in common? (2 points)
A. They have two valence electrons.
B. They tend to lose electrons to gain stability.
C. They react strongly with the alkali metals.
D. They do not react with halogens.
The first two columns of the periodic table make the s-block, and the elements in this block have in common that they tend to lose electrons to gain stability. The correct answer is B.
