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Number of neutrons = Mass number - atomic number

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You must subtract Atomic number from the Mass number

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Mass number - Atomic number = Number of neutrons.

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Mass number = # protons (or atomic number) + neutrons
Neutrons = Mass number - # protons (or atomic number)

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Q: In order to calculate the number of neutrons you must subtract the from the?
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How you can use an atomss mass number and atomic number to determine the number of protons electrons and neutrons in the atom?

number of protons and electrons present in an element is equal to the atomic number of that element while number of neutrons is equal to mass number - atomic number/number of protons/number of electrons.

How many protons neutrons and electrons are there in sulfur?

There are 16 protons, 16 neutrons and 16 electrons in a Sulfur atom. *note it's atomic number- this is the number of protons in an atom of an element. There must be the same number of electrons to balance the charge. The atomic weight minus the number of protons gives you the number of neutrons

How many protons and neutrons are there in the sulfur 36 isotope?

The sulfur atom has 16 protons and 16 electrons.The three stable isotopes of sulfur differ in their neutron number:Isotopes with mass number -32, -33 or -34 have 16, 17 or 18 neutrons respectively. The isotope with mass number 32 is the most abundant natural isotope.

How did scientists discovering protons and neutrons help them to place elements in their correct order and group?

By discovering the elements proton number, it became easier for scientists because the elements had similar properties. And they could arrange it by increasing proton number, valence electrons or electronic configuration.

What isotope of carbon 12 radioactive?

Carbon 12? The isotope number signifies that there are 12 neutrons AND protons. Carbons atomic number will tell you the number of protons, therefore u subtract the atomic number of Carbon from 12 to find out its neutron count.

Related questions

How many neutorns are in oxygen?

There are 8 neutrons in oxygen. In order to get number of neutrons, you will subtract the number of protons which is 8 from the atomic mass weight of oxygen which is 16.

What info could you use to determine the atomic number of an unknown element that has a mass number of 22?

In order to answer this, the number of neutrons must also be known. Subtract the number of neutrons from the mass number and the result is the atomic number. mass no. - no. of neutrons = atomic number (no. of protons)

How do you find neutrons in an element?

You can find the number of neutrons in an element by subtracting the number of protons (atomic number) from the atomic mass of the element. The atomic mass represents the total mass of protons and neutrons in the nucleus.

Can you identify an atom without knowing number of neutrons in it?

Yes, and in order to find the Number of Neutrons, subtract Atomic Mass from Number Of Protons, the result will be the Number of Neutrons for that atom *No. Of Neutron=Atomic Mass - Number Of Protons

How many protons nuetrons and electrons does argon have?

Argon has 18 protons, 22 neutrons, and 18 electrons. The number of protons determines the element, so argon always has 18 protons. The sum of the protons and neutrons gives the atomic mass of argon, which is around 40.

What is the mass number and what is the symbol?

Mass number is the number of protons and neutrons in the atomic nucleus of an isotope. In order to answer this question, you need to know the number of neutrons.

How do you get the number of neutrons in a element?

To find the number of neutrons in an atom you would subtract the protons from the atomic mass. The number of protons is equal to the atomic number. When dealing with an element with no net charge, the atomic number = the number of protons and also the number of electrons. The atomic mass - the atomic number (number of protons and electrons) = the number of neutrons

When bearing is greater than 180 how to calculate back bearing?

when bearing is greater than 180 In order to calculate back bearing subtract bearing from 360

What does an elements atomic number represent-?

The number of protons (or electrons) an atom has. To find out how many neutrons there are take the atomic number and subtract it from the Atomic Mass... (atomic mass)-(atomic number)= neutrons atomic number= #of protons (or #of electrons)

How many neutrons are found in one atom of 40K?

I'm assuming you are referring to Potassium (K)-40. All Potassium has 19 protons, though there are many stable isotopes. Potassium-40 has 21 neutrons.

Why must you know both how many protons and how many neutrons an element has in order to fully identify it?

The number of protons determine what element it is, the number of neutrons determine what isotope it is.

What element is in period 5 and is a transition element and has 51 neutrons?

The isotope of zirconim, 91Zr, has 51 neutrons. In order to solve this problem, one must know that an element's atomic weight is the average of its number of protons and neutrons (only neutrons are variable). Since the atomic number is the number of protons, the atomic number subtracted from the atomic weight gives the number of neutrons. An element in period 5 that has this many neutrons is found to be zirconium (the isotope 91Zr).