Multiple Choice
How many valence electrons does an atom of iodine (I) possess?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
Multiple Choice
Which of the following elements has the greatest number of valence electrons available for bonding?
A
Oxygen (O)
B
Sodium (Na)
C
Phosphorus (P)
D
Neon (Ne)
Verified step by step guidance1
Identify the group number of each element in the periodic table, as the group number corresponds to the number of valence electrons for main-group elements.
Oxygen (O) is in group 16, so it has 6 valence electrons.
Sodium (Na) is in group 1, so it has 1 valence electron.
Phosphorus (P) is in group 15, so it has 5 valence electrons.
Neon (Ne) is in group 18, so it has 8 valence electrons, but since it is a noble gas, it typically does not form bonds, so its valence electrons are not considered 'available' for bonding.
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