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The atomic number IS the number of protons. if you are given the mass number, then subtract the number of protons from it.

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Q: How do you figure out many protons there are if you are givin the atomic number and number of neutrons?
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How do you figure out atomic mass number?

Number of neutrons + Number of protons


How do you figure out protons electrons neutrons?

Find the atomic number. That tells you the number of protons and electrons (in a neutral atom). Then find the atomic weight. The number of protons plus the number of neutrons will equal the atomic weight. So if you know the wt. just subtract the number of protons and you will have the number of neutrons.


How many protons neutrons and electrons in 40Ca plus 2?

I don't want to do your homework for you. Here's how you figure it out: Protons = atomic number Neutrons = atomic mass - atomic number Electrons = atomic number + ionization


How do you determine the number of protons electrons and neutrons present in an element by identifying its atomic and mass numbers from the periodic table?

Atomic number means number of protons present in an atom. Atomic number= number of protons. mass number = number of neutrons+ number of protons. So if you subtract the number of protons you get neutrons and if you subtract neutrons you get protons. mass number - protons= neutrons Mass number - neutrons = protons.


A chlorine atom that has 17 protons and 18 neutrons is called?

The mass number is the sum of the protons and neutrons, in this case 35. The atomic number is the same as he number of protons, in this case 17.


How many neutrons is in californium?

153 neutrons in the most stable isotope Number of neutrons = Atomic mass of an isotope - atomic number. Atomic mass of the most stable isotope of Cf is 251. Atomic number of Cf is 98.


What does mass do?

The Atomic Mass is equal to the number of protons plus neutrons. So if you know the atomic number then you can find out the number of neutrons Atomic # is the amount of Protons or Electrons Atomic Mass- Number of protons plus neutrons Atomic Mass-Atomic Number = Amount of neutrons


What are counted in an an atom to determine mass number?

Atomic Mass: protons AND neutrons atomic number: just protons


What are the number of protons neutrons and electrons in an element?

Number of protons = Number of electrons = Atomic number Number of neutrons = Atomic number - Number of protons


How can you figure out how many neutrons are in an atoms nucleus by using the atomic number and the atomic mass?

The atomic mass (rounded to the nearest whole number) is the number of nucleons - i.e. protons+neutrons. The atomic number is just the number of protons. So the difference between the two (mass minus number) tells you the number of neutrons.


How many protons are in a lithium nucleus?

The atomic number of lithium is 3. Therefor there are 3 protons and neutron in the nucleus of lithium. Lithium also has 4 neutrons. atomic # = protons and neutrons neutrons = rounded atomic mass - atomic number Sources- 7th grade Acc. Science


How do you know the number of protons from the number of neutrons?

If you have both the mass number and atomic number you can figure it out, since the atomic number is the number of protons. Say the mass number is 13 and the atomic number is 8. 13-8 is 5, so you would have 5 neutrons.