Question

question 2 (2 points)
which response below shows atoms with 4 valence electrons?
○ c, si, p
○ n, p, as
○ c, n, o
○ c, si, ge

Explanation:

Valence electrons are the electrons in the outermost shell of an atom. For main - group elements, the number of valence electrons is equal to the group number (for groups 1 - 2 and 13 - 18).

• Carbon (C) is in group 14, so it has 4 valence electrons.
• Silicon (Si) is in group 14, so it has 4 valence electrons.
• Germanium (Ge) is in group 14, so it has 4 valence electrons.
• Phosphorus (P) is in group 15, so it has 5 valence electrons.
• Nitrogen (N) is in group 15, so it has 5 valence electrons.
• Oxygen (O) is in group 16, so it has 6 valence electrons.

Answer:

C, Si, Ge