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The atomic number is nine, because there are 9 protons. The mass number is 19, because an element does not have a charge, unless it forms to an ion. Therefore, if protons and neutrons have an amu of 1, the equation is as follows: Mass number (19)- Atomic number (9)= 10. There are 10 Neutrons and 9 protons.

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15y ago
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9y ago

Mass number is found by adding the number of protons and neutrons. So Fluorine, which has 9 atoms, would be added to the number of neutrons, 8. The equation would be:

9+8=17

So the mass number of fluorine with 8 neutrons is 17u.

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16y ago

I DONT KNOW!!! WE THOUGHT THAT YOU WERE SMART!!!!!!!

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15y ago

It is 19. The mass of an atom is equal to the total sum of the nuetrons and protons in the atoms nucleus.

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14y ago

19

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Q: What is the mass number of a fluorine atom with 8 neutrons?
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Related questions

What is the number of electrons and neutrons in fluorine?

In a neutral atom of fluorine, there are 9 electrons. The number of neutrons varies with an isotope's mass number.


Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does fluorine have?

Answer is in the question itself. 19. Because atomic mass is nearly equal to the mass number of the atom. Mass number is always a round number that is natural number. The proton code for fluorine atom is 9. Mass number is the total number of protons and neutrons. So for mass number 19, the number of neutrons will be 19 - 9 = 10.


How many neutrons are in one atom in fluorine?

subtract the atomic number by the Atomic Mass, and that is the answer. if its a neutral atom, there are probably the same number neutrons as protons.


A fluorine atom has 9 protons 10 neutrons and 8 electrons What are the mass number and atomic number for this atom?

Mass number = 19, Atomic number = 9


How many protons neutrons electrons in atom of fluorine?

An atom of Fluorine has the atomic number 9 and the mass number 19 (rounded up). This means it has 9 electrons, 9 protons and (19-9) 10 neutrons. The proton and electron count are taken from the atomic number. The mass number - the atomic number gives the number of neutrons.


What is the weight of the atom if an atom has 9 protons?

The weight (mass) of an atom with 9 protons will vary depending on the number of neutrons. 9 protons defines the atom as fluorine (F), and it can have 10 protons, making the mass 19 amu, or it can have a mass of 14 amu up to 31 amu, but the only stable isotope is the one with a weight (atomic mass) of 19 amu.


Calculate the number of protons of the atom whose mass number is 19 and whose number of neutrons is 10?

Mass number 19 means a total of 19 protons and neutrons. If it has 10 neutrons, that leaves 9 protons, which is Fluorine.


What is the number of neutrons in an atom affects the atomic what?

The number of neutrons in an atom can affect the atomic mass of an atom.


What is fluorine's number of neutrons?

Neutrons have the same mass as a proton but lack an electrical charge. The number of neutrons can be found by subtracting the atomic number, or number of protons in the atom, from the atomic weight. This is calculated this way because the atomic weight represents both the number of protons and neutrons. Fluorine's atomic number is 9 and its atomic weight is 18.998, so 18.998-9= 9.998. Consequently, 9.998 is fluorine's number of neutrons.


What is the mass number of a fluorine atom?

Fluorine is a non metal element. Mass number of it is 19.


Is the number of neutrons in an atom known as its mass number?

No, neutrons + protons = mass


What is the total amount of protons and neutrons in an atom?

The total amount of protons and neutrons in an atom is its mass number.