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How many neutrons are present in a neutral atom of beryllium-9?
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2. Atoms & Elements
The Atom
Multiple Choice
How many electrons does a neutral atom of titanium contain?
A
24
B
12
C
47
D
22
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검증된 단계별 안내1
Identify the atomic number of titanium from the periodic table. The atomic number represents the number of protons in the nucleus of an atom.
Recall that a neutral atom has an equal number of protons and electrons to balance the positive and negative charges.
Since titanium's atomic number is 22, it has 22 protons.
Therefore, a neutral titanium atom must also have 22 electrons to be electrically neutral.
Conclude that the number of electrons in a neutral titanium atom is equal to its atomic number, which is 22.
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