Multiple Choice
The fusion of which element in stars has resulted in the creation of all other heavier elements through nucleosynthesis?
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2. Atoms & Elements
The Atom
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Which of the following diagrams correctly represents the charges of the subatomic particles in a neutral beryllium atom?
A
4 negatively charged protons, 4 neutral neutrons, and 4 positively charged electrons
B
4 positively charged protons, 4 negatively charged neutrons, and 4 neutral electrons
C
4 neutral protons, 4 positively charged neutrons, and 4 negatively charged electrons
D
4 positively charged protons, 4 neutral neutrons, and 4 negatively charged electrons
Verified step by step guidance1
Recall the basic charges of subatomic particles: protons are positively charged, neutrons have no charge (neutral), and electrons are negatively charged.
Identify the number of each subatomic particle in a neutral beryllium atom. Since beryllium has an atomic number of 4, it has 4 protons and, to be neutral, it must have 4 electrons. The number of neutrons can vary, but they are always neutral.
Analyze each option by matching the charges to the correct subatomic particles: protons should be positive, neutrons neutral, and electrons negative.
Check the first option: it incorrectly states protons are negatively charged and electrons are positively charged, which contradicts the known charges.
Confirm the last option correctly represents the charges: 4 positively charged protons, 4 neutral neutrons, and 4 negatively charged electrons, which matches the structure of a neutral beryllium atom.
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