Questions and Answers
What is the atomic number of an element?
The number of protons in an atom's nucleus
Which subatomic particle carries a positive charge and determines the atom's identity?
Proton
What does the mass number of an atom represent?
The sum of protons and neutrons in an atom's nucleus
What are isotopes?
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What is the role of neutrons in an atom's nucleus?
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What is the mass and charge of a neutron?
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What term is used to describe atoms of the same element with a different number of neutrons?
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What is the average relative atomic mass (Ar) of chlorine given the following isotopic abundances: Cl-35 (75%) and Cl-37 (25%)?
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Which particle does not have any charge?
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What effect do neutrons have on the physical properties of an element?
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