객관식
An atom contains 6 protons, 6 neutrons, and 6 electrons. What is the total charge of this atom?
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2. Atoms & Elements
The Atom
객관식
How many protons are present in a neutral atom of magnesium?
A
12
B
8
C
24
D
16
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검증된 단계별 안내1
Recall that the number of protons in a neutral atom is equal to the atomic number of the element.
Identify the element given in the problem, which is magnesium.
Look up the atomic number of magnesium on the periodic table; this number represents the number of protons.
Understand that the atomic number is unique to each element and defines the element's identity.
Conclude that the number of protons in a neutral magnesium atom is equal to its atomic number.
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