Multiple Choice
What does the atomic number of an element indicate?
2. Atoms & Elements
The Atom
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Which one of the following statements about atomic structure is false?
A
The number of protons in an atom's nucleus defines the element.
B
Electrons orbit the nucleus in defined paths called orbitals.
C
Electrons have a positive charge.
D
Protons and neutrons are located in the nucleus of an atom.
Verified step by step guidance1
Identify the key components of an atom: protons, neutrons, and electrons. Protons and neutrons are located in the nucleus, while electrons are found in orbitals around the nucleus.
Understand the charge of each subatomic particle: protons have a positive charge, neutrons have no charge (neutral), and electrons have a negative charge.
Recognize that the number of protons in the nucleus of an atom determines the element's identity. This is known as the atomic number.
Clarify the concept of orbitals: Electrons do not orbit the nucleus in fixed paths like planets around the sun. Instead, they exist in regions of space called orbitals, where there is a high probability of finding an electron.
Evaluate the given statements: The statement 'Electrons have a positive charge' is false because electrons actually have a negative charge.
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