Question

select the correct boxes. which two elements have the same number of valence electrons? element atomic number barium 56 neon 10 silicon 14 carbon 6

Explanation:

Valence electrons depend on group in periodic table. Carbon (atomic number 6) has electron configuration 1s²2s²2p² (4 valence e⁻). Silicon (14) has 1s²2s²2p⁶3s²3p² (4 valence e⁻). Both have 4 valence electrons.

Answer:

silicon, carbon