Question

which of the following groups of elements all have 4 valence electrons?
select one:
o/s/se/te
c/si/ge/sn
li/na/k/rb
n/p/as/sb
b/al/ga/in
f/cl/br/i

Explanation:

• For elements in the same group of the periodic table, the number of valence electrons is the same.
• Group 14 (or IVA) elements have 4 valence electrons.
• \(C\) (Carbon), \(Si\) (Silicon), \(Ge\) (Germanium), \(Sn\) (Tin) are in group 14.
• \(O/S/Se/Te\) are in group 16 (6 valence electrons).
• \(Li/Na/K/Rb\) are in group 1 (1 valence electron).
• \(N/P/As/Sb\) are in group 15 (5 valence electrons).
• \(B/Al/Ga/In\) are in group 13 (3 valence electrons).
• \(F/Cl/Br/I\) are in group 17 (7 valence electrons).

Answer:

C / Si / Ge / Sn