Multiple Choice
How many valence electrons does a nitrogen atom have?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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How many valence electrons does a bromine (Br) atom have available for bonding?
A
two
B
five
C
seven
D
one
Verified step by step guidance1
Identify the group number of bromine (Br) in the periodic table. Bromine is in Group 17, also known as the halogens.
Recall that the group number for main-group elements corresponds to the number of valence electrons. For Group 17 elements, this means they have 7 valence electrons.
Understand that valence electrons are the electrons in the outermost shell of an atom that are available for bonding.
Confirm that bromine, being in Group 17, has 7 valence electrons available for bonding.
Therefore, the number of valence electrons for bromine is seven.
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