Question

which element has six valence electrons? (1 point) oxygen (o) carbon (c) phosphorus (p) lead (pb)

Explanation:

To determine which element has six valence electrons, we analyze the electron configurations or group number (for main - group elements) of each option:

• Oxygen (O): Oxygen is in Group 16 of the periodic table. For main - group elements, the number of valence electrons is equal to the group number (for Groups 1 - 2 and 13 - 18). So, oxygen has 6 valence electrons.
• Carbon (C): Carbon is in Group 14. So, it has 4 valence electrons.
• Phosphorus (P): Phosphorus is in Group 15. So, it has 5 valence electrons.
• Lead (Pb): Lead is in Group 14 (it is a post - transition metal in the carbon family). So, it has 4 valence electrons.

Answer:

A. oxygen (O)