A neutral atom of carbon has 6 protons. How many electrons does it have?

Question

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0 points
8
6
4
more information is needed
An atom has a mass of 17 and an atomic number of 9. How many neutrons does this atom have?
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0 points
26
8
17
9

Answer 1

1. A neutral atom of carbon has 6 protons, and in a neutral atom, the number of electrons equals the number of protons. Therefore, a neutral carbon atom has 6 electrons.

2. An atom with a mass number of 17 and an atomic number of 9 can be analyzed as follows:

• The atomic number (9) represents the number of protons.
• The mass number (17) is the sum of protons and neutrons.

To find the number of neutrons, you can use the formula:

\[ \text{Number of neutrons} = \text{Mass number} - \text{Atomic number} \]

Thus:

\[ \text{Number of neutrons} = 17 - 9 = 8 \]

So, this atom has 8 neutrons.