Multiple Choice
Which type of properties are primarily determined by the valence electrons of an element?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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How many valence electrons do elements in Group 13 of the periodic table possess?
A
1
B
7
C
3
D
5
Verified step by step guidance1
Identify the group number of the elements in question. Group 13 elements are located in the 13th column of the periodic table.
Recall that the group number for main group elements corresponds to the number of valence electrons. For Group 13, this means the elements have valence electrons equal to the group number minus 10 (since groups 13-18 correspond to 3-8 valence electrons).
Calculate the valence electrons by subtracting 10 from the group number: $13 - 10 = 3$.
Understand that valence electrons are the electrons in the outermost shell of an atom and determine the chemical properties and bonding behavior of the element.
Conclude that elements in Group 13 have 3 valence electrons.
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