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The atomic number of am element is determined by its number of either electrons or protons, hence here, it is 18. Therefore the element must be argon which the isotope has mass number 38, as there are 18 protons and 20 neutrons.

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How do you calculate the amount of protons or neutrons in an element?

well you look at the periodic table of elements. the atomic number equals the number of protons. Then subtract the number of protons from the atomic mass (both protons and nuetrons have atomic mass units of 1 and electrons equal 0). That will give you the number of nuetrons.


How many nuetrons are in the element oxygen?

There are 8 neutrons in oxygen element because the no. of electrons are equal to the number of protons and oxygen element contain 8 electrons.


The atomic number of an element is what?

The atomic number of an element is how many protons and electrons (you must have the same amount of protons as electrons) an element has in it's nucleus. The Atomic number= number of protons= number of electrons.


How many electrons protons and nuetrons are in the element tungsten?

protons= 74 neutrons= 110 electrons= 74


What is the atomic mass the same as?

The Atomic Mass is equal to the number of protons and electrons that an element has.


How many protons nuetrons and electrons does yttrium have?

Look at the atomic number. That will be the number of protons and electrons; subtract that number from the atomic mass (rounding down) and you'll have the number of neutrons.


What is The atomic mass of an element is equal to?

The number of protons, electrons, and neutrons:P


What does the number of protons in an atom also tell you?

The number of protons in the nucleus of an atom tell you which element you are dealing with. It is the number of protons in an atomic nucleus that determines the elemental identity. Only that. The atomic number of an element is the number of protons you will find in the nucleus of every atom of that element, regardless of the number of neutrons or electrons involved.


How many protons nuetrons and electrons does copper have?

Copper has 29 protons, that is why it has the atomic number of 29. In addition, copper has 29 electrons and 35 neutrons.


How many protons nuetrons and electrons does Xenon have?

Xenon has 54 protons, 77 neutrons, and 54 electrons. The number of protons determines the element's chemical properties, while the total number of protons and neutrons determines the atomic mass. Electrons equal the number of protons in a neutral atom.


How many protons neutrons and electrons are in aluminum?

The number of protons for any element is the atomic number. The number of electrons is equal to the number of electrons. To find the number of nuetrons you must subtract the atomic number from the mass number mass number-atomic number= number of nuetrons protons=electron the number of protons in the element aluminum is 13. The number of electrons is 13.


How do you find the atomic mass number of an atom of an element?

add the number of protons and nuetrons together