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Elements are typically classified by the number of protons, since electron count can vary in ions.

However, the element with 9 protons and 9 electrons (in the non-ionized configuration) is fluorine.

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11y ago
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14y ago

Elements' atomic numbers are based on the number of protons an atom of that element contains. Fluorine atoms contain 9 protons. Therefore, fluorine is the element with the atomic number 9. Fluorine is also a compound because it has 9 protons.

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13y ago

I belive it's fluorine!

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15y ago

Beryllium in group 2.

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14y ago

Fluorine.

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12y ago

Fluorine

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12y ago

fluorine

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Q: What atom has the mass number 9?
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Related questions

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


An isotope of fluorine has a mass number of 19 and an atomic number of 9. how many protons are in this atom?

9


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 protons are represented in an atom which has an atomic number of 9 and an atomis mass of 19?

An atom with an atomic number of 9 has 9 protons; that's what the atomic number is, it tells you the number of protons in the nucleus.


An atom has a mass number of 9 and 5 neutrons. What is the atomic number?

The atomic number is 4


What is the symbol of fluorine atom including its mass number and atomic number?

Symbol - F Atomic Number - 9 Mass Number - 19


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.


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 do you get when you change the mass number of an atom?

You can't change the mass number of an atom because the mass number is the number of protons which is the atom's atomic number I hope this helped :)


What is the mass number of a atom?

the mass number is number of protons in an atom, plus the number of neutrons.


An atom with an atomic number of 9 and mass number of what is the atomic mass?

This is an Oxygen-17 isotope.Isotopic mass = 16.9991315 u. (Approximately equal to no. of protons + no. of neutrons = 8 +9 = 17)Similar Questions:What type of atom or ion would have 8 protons 9 neutrons and 10 electrons?


How many electrons in atom with atomic number of 9 and atomic mass of 19 and is electrically neutral?

Since the atom is electrically neutral, the number of electrons must be the same as the number of protons in the atom, which is the definition of atomic number. Therefore, there are 9 electrons.