Whats the number that tells you the number of protons and neutrons?
Number of protons = Atomic number
Number of electrons in a neutral atom = Atomic number
Number of neutrons = Mass number (the mass number is the sum of protons and neutrons in an atom) minus Atomic number (equal to number of protons)
The number 85 after krypton is theatomic weightwhich tells you how many protons and neutrons are in the nucleus.The atomic number tells you the number of protons in the nucleus,kryptons atomic number is 36, so thereare 36 protons. To find neutrons subtract the number of protons from the atomic weight, 85 - 36 = 49 neutrons.
The number protons in an atom is called the atomic number (it is this number that tells us which element the atom is). The number of neutrons in an atom can change, but the term for the amount of neutrons is called an isotope. The number of protons and neutrons added together is called the atomic mass.
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.
Every atom of the same element will have the same number of protons. The number of protons is the same as the atomic number, which is 6 protons. In a neutral atom, the number of electrons is the same as the number of protons, so 6 electrons. Carbon-13 tells the mass number (the sum of the protons and neutrons). So we subtract the number of protons from the mass number to get the neutrons, 13…
The position of Carbon on the periodic table tells you how many protons carbon has in its nucleus. The number after it tells you the total number of protons and neutrons. You can take the number after it and subtract its number on the periodic table and get the number of neutrons. For example: Helium is the second element in the periodic table. Helium 3 has two protons and one neutron. Helium 4 has 2…
How many protons electrons and neutrons does an atom with an atomic number of 50 and mass of 55 have?
The atomic number 50 corresponds to the element tin, or Sn. The atomic number tells you the number of protons, which is 50 protons. The mass number is equal to the number of protons + the number of neutrons. So 55 - 50 = 5 neutrons And a neutral atom has exactly the same number of protons as electrons, so it has 50 electrons.
There are lots of different parts of atoms, but the ones that really define what the atom is are protons, neutrons, and electrons. The protons and neutrons are in the nucleus, and the electrons outside it. The number of protons tells us what the element is for the atom, and the number of neutrons tells us the isotope. If the atom is not ionized and not part of a chemical compound, the number of electrons…
What is the atomic number the atomic mass the atomic symbol the number of electrons neutrons and protrons in the element lithium?
atomic number: usually the number above the chemical symbol; tells you the number of protons; tells you the number of electrons in a neutral atom atomic mass: the decimal number usually found under the chemical symbol; tells you the number of protons and neutrons in that neutral element number of electrons: the atomic number if it is a neutral atom number of neutrons: (rounded) atomic mass - atomic # = # of neutrons number of…
How do you solve for the mass number of an atom when only the charge of the atom and its atomic number are given?
You can't. To find the mass number, you need to know how many neutrons are in the nucleus (mass number = # of protons + # of neutrons). The atomic number is equal to the number of protons, and the charge tells you the number of electrons indirectly (net charge of atom = # of protons – # of electrons). Neither of these things tells you anything about the number of neutrons, which is what…
If a neutral atom has a mass of 15 amu and an atomic number of 7 determine the number of protons neutrons and electrons in the atom?
There are 8 neutrons, 7 protons, and 7 electrons. Atomitc number is always tells how many protons there are. We consider protons and neutrons to have a weight of 1. There are 7 protons, so we take the weight and subtract it from 15 to get how many neutrons we have ( which is 8). Because the atom is neutral ( no charge) there has to be the same amount of electrons as there are…
How can the atomic number and mass number be used to determine the amount of each subatomic particle present in an atom of a given element?
The atomic number tells you the number of protons in the nucleus. The atomic mass tells you the average number of protons and neutrons in the nucleus (it has to be an average because most elements exist in a variety of isotopes, and each isotope has a different number of neutrons) so if you subtract the atomic number from the atomic mass you then have the average number of neutrons. And the number of electrons…
The atomic number tells how many protons are in the atom, and the atomic mass tells how many neutrons and protons are in the atom together. Like Oxygen has an atomic number of 8. It also has 8 protons. It's atomic mass is 16. It also has 16 neutrons and protons. Helium's atomic number is 1. It only has 1 proton. It's atomic mass is 1 because it doesn't have any neutrons.
How can you figure out how many neutrons are in an atoms nucleus by using the atomic number and the atomic mass?
How many protons and electrons and neutrons does an atom have with atomic number of 50 and a mass number of 125?
The atomic number tells you the number of protons in an atom, which in this case is 50. Assuming the charge of the atom is 0, the number of electrons is the same as the number of protons, so in this case there are 50 electrons. The number of neutrons is the atomic number subtracted from the atomic mass. Therefore, the number of neutrons is 125 - 50 = 75.
If the atomic number of an element is 6 and the atomic mass is 12.01 how many protons are there in the nucleus?
If the atomic number is 25, that defines the element as manganese (Mn) and tells you it has 25 protons in the nucleus. The atomic mass is equal to the atomic number + the number of neutrons. So, the number of neutrons in the nucleus would be 36-25 = 11. Thus, there are 25 protons and 26 neutrons in the nucleus.