Being Cu-64 says it is copper. Copper has 29 protons in the nucleus. Since there are the same number of electrons as protons it must have 29 electrons. The number 64 indicates there are 64 particles in the nucleus. Sine 29 are protons, the rest must be neutrons so there must be 35 of these.
54 protons, an average of 77 neutrons, and 54 electrons.
Bromine has the atomic number 35, so it has 35 protons. To find the number of neutrons in Bromine-80, subtract the atomic number from the atomic mass: 80 (atomic mass) - 35 (protons) = 45 neutrons. Since it is a neutral atom, the number of protons and electrons are the same, so there are 35 electrons.
A silicon-28 atom has 14 protons, 14 neutrons, and 14 electrons. The number of protons determines the element (silicon in this case), the sum of protons and neutrons gives the atomic mass of the isotope (28 in this case), and the number of electrons balances the charge to make the atom electrically neutral.
The element with atomic number 35 is bromine (Br). It has 35 protons and since it is neutral, it also has 35 electrons. To find the number of neutrons, subtract the atomic number (35) from the atomic mass (80). So, bromine-80 has 45 neutrons.
The element with 82 protons is lead (Pb). The number of electrons in a neutral atom of lead is equal to the number of protons, which is 82. To find the number of neutrons, you subtract the number of protons from the mass number, which is 125 neutrons for this isotope of lead.
54 protons, an average of 77 neutrons, and 54 electrons.
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.
no, you add the protons and neutrons
Bromine has the atomic number 35, so it has 35 protons. To find the number of neutrons in Bromine-80, subtract the atomic number from the atomic mass: 80 (atomic mass) - 35 (protons) = 45 neutrons. Since it is a neutral atom, the number of protons and electrons are the same, so there are 35 electrons.
The mass number for iodine is 131, which is the sum of the protons and neutrons. Iodine has 53 protons and 53 electrons, if neutral. To find how many neutrons iodine has subtract 53, the number of protons from the mass number of 131. This shows that iodine has 78 neutrons.
A silicon-28 atom has 14 protons, 14 neutrons, and 14 electrons. The number of protons determines the element (silicon in this case), the sum of protons and neutrons gives the atomic mass of the isotope (28 in this case), and the number of electrons balances the charge to make the atom electrically neutral.
Well, honey, to find the protons, electrons, and neutrons for strontium with a mass of 83, you need to look at the periodic table. Strontium has an atomic number of 38, which means it has 38 protons and 38 electrons. To find the number of neutrons, you subtract the atomic number from the mass number, so for strontium-83, you have 45 neutrons. Voila!
The number of protons
The mass number of an atom is the number of protons plus the number of neutrons. This is is the same as the number of electrons plus the number of neutrons since the number of protons is the same as the number of electrons in an atom.
No they are not in the same way that arms and legs are not people.Protons, neutrons and electrons can come together in some specific numbers form atoms (or molecules). You can also have electrons by themselves. Normally you will not find isolated neutrons and protons. Alpha particles are 2 protons+2 neutrons which are found in radioactive decay.
In a neutral atom, the number of electrons is equal to the number of protons of the nucleus.
Iron-56 or 56Fe 56 protons makes it iron. If you add the protons and neutrons, you find the mass, which is 56.