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Which element has 6 protons in its nucleus?
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2. Atoms & Elements
The Atom
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Which of the following statements is true concerning the structure of the atom?
A
Neutrons are negatively charged particles.
B
Protons and electrons have the same mass.
C
The nucleus contains only electrons.
D
Electrons orbit the nucleus in fixed paths called shells.
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Understand the basic structure of an atom: An atom consists of a nucleus containing protons and neutrons, with electrons orbiting around the nucleus.
Recall the charges of subatomic particles: Protons are positively charged, electrons are negatively charged, and neutrons have no charge.
Compare the masses of protons and electrons: Protons have a much greater mass than electrons. The mass of a proton is approximately 1 atomic mass unit (amu), while the mass of an electron is about 1/1836 of a proton's mass.
Identify the components of the nucleus: The nucleus of an atom contains protons and neutrons, not electrons.
Recognize the concept of electron shells: Electrons orbit the nucleus in regions called shells or energy levels, which are not fixed paths but rather probabilistic distributions where electrons are likely to be found.
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