Multiple Choice
How many valence electrons are present in a sulfur atom?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which metalloid has three valence electrons?
A
Silicon
B
Lithium
C
Boron
D
Arsenic
Verified step by step guidance1
Understand that metalloids are elements with properties intermediate between metals and nonmetals, often found along the zig-zag line on the periodic table.
Recall that valence electrons are the electrons in the outermost shell of an atom, which determine its chemical properties and bonding behavior.
Identify the group number of each element to find the number of valence electrons: Boron is in group 13, which means it has 3 valence electrons.
Verify that Silicon (group 14) has 4 valence electrons, Lithium (group 1) has 1 valence electron, and Arsenic (group 15) has 5 valence electrons.
Conclude that among the given metalloids, Boron is the one with three valence electrons.
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