Multiple Choice
Which type of element makes up the majority of the elements on the periodic table?
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2. Atoms & Elements
Periodic Table: Classifications
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Which property primarily determines an element's position in the periodic table?
A
Atomic mass
B
Electronegativity
C
Atomic number
D
Number of neutrons
Verified step by step guidance1
Understand that the periodic table is organized based on a fundamental property of elements that reflects their identity.
Recall that the atomic number represents the number of protons in an atom's nucleus, which uniquely identifies each element.
Recognize that atomic mass varies due to isotopes, and electronegativity is a chemical property that changes across the table but does not determine position.
Note that the number of neutrons can vary within isotopes of the same element and does not affect the element's position in the periodic table.
Conclude that the atomic number is the primary property used to arrange elements in the periodic table, increasing from left to right and top to bottom.
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