Multiple Choice
How many valence electrons do elements in Group 2 of the periodic table possess?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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How many valence electrons does antimony (Sb) have?
A
5
B
3
C
2
D
7
Verified step by step guidance1
Identify the group number of antimony (Sb) in the periodic table. Antimony is in group 15 (or group V) of the periodic table.
Recall that elements in group 15 have 5 valence electrons because the group number corresponds to the number of valence electrons for main group elements.
Understand that valence electrons are the electrons in the outermost shell of an atom that participate in chemical bonding.
Confirm that antimony's electron configuration ends in the 5th shell with 5 electrons in the outermost s and p orbitals, consistent with group 15 elements.
Conclude that antimony (Sb) has 5 valence electrons based on its group number and electron configuration.
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