Question

1. how many valence electrons do the alkaline earth metals have?

2
4
6
7

1. which of the following elements has the same electron dot structure as nitrogen?

silicon
carbon
arsenic
helium

Explanation:

Alkaline Earth Metals are in Group 2 of the periodic table and have 2 valence electrons. Elements in the same group have the same number of valence electrons and thus the same electron - dot structure. Nitrogen is in Group 15, and arsenic is also in Group 15.

Answer:

1. 2
2. arsenic