81. Simply add them together. 43 + 38 = 81.
Protons = electrons =31
mass= protons+neutrons=69
81: Simply add the two numbers.
70 units
31 protons
In a neutral atom of fluorine, there are 9 electrons. The number of neutrons varies with an isotope's mass number.
The protons is 7, the neutrons is 8, and the electrons is 22.
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 protons ( which is 7).
The number of protons and electrons is equal to the atomic number in a neutral atom.The number of protons is the mass number minus number of protons.
The sum of masses of protons, neutrons and electrons.
In a neutral atom of fluorine, there are 9 electrons. The number of neutrons varies with an isotope's mass number.
The mass number is the number of protons and neutrons added together. Electrons are not counted as part of the mass because while protons and neutrons weigh the same, Electrons weigh virtually nothing compared to them. As far as I can tell, there is no stable atom with a mass of 8.
The protons is 7, the neutrons is 8, and the electrons is 22.
Protons: 5 Neutrons: 7 Electrons: 5
Number of neutrons = Atomic mass of an isotope - Atomic number of the element The atomic number of meitnerium is 109. Each isotope of an element has a different number of neutrons.
10 protons, 10 neutrons, 12 electrons
A neutral atom with an atomic mass of 36 amu will have 36 electrons. This is because the atomic mass of an atom is determined by the sum of its protons and neutrons, and in a neutral atom, the number of electrons is equal to the number of protons.
Atomic number = number of protons or electrons (in a neutral atom) Mass number: sum of protons and neutrons The mass number is bigger.
Mass of an atom = mass of protons + mass of neutrons
46. That answer is incorrect. If the atom has 22 neutrons, then it must have 24 protons to make up the total mass of 46. A neutral atom always has the same number of electrons as protons so the correct answer is 24.
Any neutral atoms has the same number of electrons as protons, and any atom has a number of protons equal to the difference between its mass number and neutron number. Therefore, this atom has 197 - 118 = 79 electrons.