Question

1. members of this family all have 2 valence electrons. (0.5 points) *

noble gases
nitrogen group
oxygen group
actinides
lanthanides
halogens
alkaline earth metals
carbon group
transition metals
alkali metals
boron group

Explanation:

Alkaline earth metals are in group 2 of the periodic table. The group number in the s - block (where alkaline earth metals are) gives the number of valence electrons. So, group 2 elements have 2 valence electrons.
Noble gases (group 18) have 8 valence electrons (except helium which has 2). Nitrogen group (group 15) has 5 valence electrons. Oxygen group (group 16) has 6 valence electrons. Actinides and lanthanides are f - block elements and their valence electron configuration is more complex. Halogens (group 17) have 7 valence electrons. Carbon group (group 14) has 4 valence electrons. Transition metals (d - block) have variable valence electrons (usually 2, but can have more due to d - electron participation in bonding in some cases). Alkali metals (group 1) have 1 valence electron. Boron group (group 13) has 3 valence electrons.

Answer:

Alkaline earth metals