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Number of neutrons = Mass number - Number of protons
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Can you use the mass number of an element to determine the number of electrons in an atom?
Mass number = number of protons + number of neutrons Number of electrons = number of protons = mass number of an isotope - number of neutrons
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.
Chlorine has atomic number 17 and mass number 35?
The atomic number tells you that chlorine atoms have 17 protons. If you know the mass number and atomic number, you can use subtraction to determine the number of neutrons like this: mass number - atomic number = 35 - 17 = 18. A neutral atom has equal numbers of protons and electrons. I'm guessing this is a neutral chlorine-17 atom, so it also has 17 electrons. So, and atom of chlorine-17 has 17 protons, 17 electrons, and 18 neutrons.
How many protons and neutrons in uranium 239?
The isotope plutonium-239, which is synthesized from uranium, has 94 protons (like all isotopes of plutonium) and 145 neutrons in its nucleus. Use the link below for more information on plutonium.
What information could you use to determine the atomic number of an unknown element that has a mass number of 22?
the only element with a mass number of 22 is sodium (Na) which has an atomic number of 11. This is because the atomic number only represents the number of protons in the nucleus, while the mass number represents the number of protons and neutrons in the nucleus.
What equation do you use to find the number of neutrons in an element?
Number of neutrons = mass number - number of protons
How do you find the number of neutrons on an element?
use a periodic table look at the atomic number
If Phosphorous has an atomic mass of 30 and atomic number of 15 how many neutrons does it have?
Atomic mass is equal to the number of protons + neutrons present in the nuclide. The atomic number is defined as the number of protons in the nuclide. Therefore to find the number of neutrons use the formula: atomic mass = #protons + # neutrons solving for # of neutrons you get: # neutrons = atomic mass - # protons plug in the given values: #neutrons = 31 - 15 # neutrons = 16
How do you subtract neutrons in an atom?
Number of Neutrons = Mass Number - Atomic Number
How do you use a periodic table?
You use a Periodic Table to find the group, period, and the material of the 115 elements. You can find the the number of protons/electrons on the bottom of the symbols(which is arranged in oder). You can the mass number on the VERY bottom of the element's block. You can find out the number of neutrons by subtracting the number of protons/electrons from the mass number.
Can you use the mass number of an element to determine the number of electrons in an atom?
Mass number = number of protons + number of neutrons Number of electrons = number of protons = mass number of an isotope - number of neutrons
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 the protons and electrons?
To find the number of protons, you use the atomic number. The atomic number is always the same number of protons. To find the average number of neutrons, you use the atomic mass and take away the number of protons. For example Oxygen has an atomic number of 8 and an atomic mass of 16.01, so since it has an atomic number of 8, it always has 8 protons, and since oxygen has a mass of 16.01, it has an average of 8.01 neutrons (the math: 16.01 mass-8 protons=8.01 neutrons). If your dealing with isotopes, you round the mass number. The mainest isotope is 8 neutrons in oxygen, but there is a few oxygen atoms that have 9 neutrons which is why the average mass is little higher than 16.
How many neutrons are in the atom of Hydrogen?
The number of neutrons in a hydrogen atom will depend on which isotope of hydrogen we consider. Not all hydrogen atoms have the same number of neutrons. The vast majority of hydrogen atoms (over 99.98%) have no neutrons at all. Some have 1 (and this is called deuterium) and some have 2 (called tritium). These two isotopes occur naturally but are rare, as can be seen.To determine the number of neutrons in an atom, you must use the mass number, which is the sum of the number of protons and the number of neutrons. Since the atomic number of the element (for H, the atomic number is 1) tells you the number of protons, you can find the number neutrons by subtraction.See the Related Questions to the left for how to count the number of protons, neutrons and electrons in any atom of any element.
How can you use the word mass number in a sentence?
Mass number is the total number of protons and neutrons.
How do you figure out how many neutrons a atom has?
You find out the charge of nucleus (a number of protons), multiply it by mass of proton. Then substitute the result from the mass of nucleus and divide by mass of neutron. The result will give number of neutrons in the nuclei. waeva is da ansa hahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahaha!!
How do you find how many protons electrons and neutrons are in an atom?
The amount of protons is the same as the Atomic Number of the atom. Also the same goes for the amount of electrons. The number of neutrons in an atom would be the atomic mass minus the number of protons, neutrons, or atomic number. (it doesn't matter which of the three you use because they are all the same number) For example Titanium has an atomic number of 22, protons 22, and electrons 22. The atomic mass is 47, so to find the amount of neutrons you would take the atomic mass (47) minus the atomic number, protons, or electrons (22). So this would be your equation... Atomic mass - electrons (or whichever you choose) equals number of neutrons. So-> 47-22=25 neutrons.
