2. What do elements in the first two columns of the periodic table have in common? (2 points)
They have two valence electrons.
They tend to lose electrons to gain stability.
They react strongly with the alkali metals.
They do not react with halogens.

Question

2.   What do elements in the first two columns of the periodic table have in common?  (2 points)
	        They have two valence electrons.
		They tend to lose electrons to gain stability.
    	They react strongly with the alkali metals.
		They do not react with halogens.

anonymous · Answer

They have two valence electrons.

ajprincess · Answer

they tend to lose electrons to gain stability

anonymous · Answer

Could you explain why please? My answer choices are between both of these and I am not sure as to which one it is.

ajprincess · Answer

The elements in the first column have only one valence electrons.
For example consider Na vch is an element in the first column.It's electronic configuration is 2,8,1. in the third energy level it has only one electron.

anonymous · Answer

Thanks so much! That's really helpful.

ajprincess · Answer

u r welcome. :)