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The atomic number of sodium is 11 and its mass number is 23. It has
- a)11 neutrons and 12 protons
- b)12 protons and 11 electrons
- c)11 electrons and 12 neutrons
- d)12 electrons and 11 neutrons
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
The atomic number of sodium is 11 and its mass number is 23. It hasa)1...
The atomic number of an element represents the number of protons in its nucleus, while the mass number represents the total number of protons and neutrons.
In the case of sodium:
- Atomic number = 11, which means it has 11 protons.
- Mass number = 23, which means it has a total of 23 protons and neutrons.
To determine the number of neutrons and electrons in sodium, we can use the following formulas:
- Number of neutrons = Mass number - Atomic number
- Number of electrons = Atomic number
Using the formulas:
- Number of neutrons = 23 - 11 = 12
- Number of electrons = 11
Therefore, the correct answer is:
C:
11 electrons and 12 neutrons
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The atomic number of sodium is 11 and its mass number is 23. It hasa)1...
Atomic Structure of Sodium
Sodium is a chemical element with the atomic number 11, which means it has 11 protons in its nucleus. The mass number of sodium is 23, which is the sum of its protons and neutrons.
Calculating Neutrons and Electrons
To find the number of neutrons, subtract the atomic number from the mass number:
Neutrons = Mass number - Atomic number
Neutrons = 23 - 11
Neutrons = 12
Since atoms are electrically neutral, the number of protons must be equal to the number of electrons. Therefore, sodium also has 11 electrons.
Correct Answer
So, the correct option is:
c) 11 electrons and 12 neutrons
This combination balances the positive charge from the protons with the negative charge from the electrons, and accounts for the atomic structure of sodium.
Sodium is a chemical element with the atomic number 11, which means it has 11 protons in its nucleus. The mass number of sodium is 23, which is the sum of its protons and neutrons.
Calculating Neutrons and Electrons
To find the number of neutrons, subtract the atomic number from the mass number:
Neutrons = Mass number - Atomic number
Neutrons = 23 - 11
Neutrons = 12
Since atoms are electrically neutral, the number of protons must be equal to the number of electrons. Therefore, sodium also has 11 electrons.
Correct Answer
So, the correct option is:
c) 11 electrons and 12 neutrons
This combination balances the positive charge from the protons with the negative charge from the electrons, and accounts for the atomic structure of sodium.
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The atomic number of sodium is 11 and its mass number is 23. It hasa)11 neutrons and 12 protonsb)12 protons and 11 electronsc)11 electrons and 12 neutronsd)12 electrons and 11 neutronsCorrect answer is option 'C'. Can you explain this answer?
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