The noble gas with 48 neutrons and a mass of less than 100 is krypton-84.
Krypton
Helium has an atomic mass of 4.- Number of Protons/Electrons: 2- Number of Neutrons: 2Lithium has an atomic mass of 7.- Number of Protons/Electrons: 3- Number of Neutrons: 4Helium has TWO less neutrons than Lithium.
The mass number has to be greater then the atomic number because the mass number is the protons plus the neutrons. If you were to take 10-12 you would get a negative number of 2 and there can't be a negative number of neutrons!
Protons and neutrons, the particles that make up atomic nuclei, are the ones responsible for almost all of the mass of an atom. As the electron has less than 1/1800th the mass of a proton, a whole flock of electrons won't significantly change the mass of an atom. We look to the protons and neutrons (called nucleons when they are being considered as components of an atomic nucleus) to contribute to the mass of an atom, and they will be considered when we derive the atom weight of an element.
I think your understanding is confused. Atomic No. of '6' indicates the position in the periodic table, the number of protons, and the number of electrons. Atomic Mass is a number ( equal to or greater than atomic no.), which is the the total of protons and neutrons in the nucleus of an atom . So you atomic mass of '5' is incorrect as it is less than '6'. I think you mean 5 neutrons. If so the atomic mass is 6 + 5 = 11 This would be the isotopic element C-11 (Carbon eleven).
All If "bigger" refers to mass, then all protons or neutrons are bigger than electrons, regardless of the element.
Electrons have ~1800 times less mass than protons and neutrons
Helium
Cadmium atomic number is 48. so, it can have 48 protons and neutrons and electrons each. it has mass less than 100. 96cadmium has 48 protons and 48 neutrons. 96 means its mass i.e, number of protons and number of neutrons
The mass and the charge. Protons are positively charged. Electrons are negatively charged. Neutrons have no charge. Protons and neutrons have similar mass (about 1 amu). The mass of electron is about 1822 times less than that of protons / neutrons.
Protons and neutrons have about the same mass. Protons and neutrons both have a mass of 1.67*10-27 kg, the last one being less than 0.2% heavier than a proton (at rest).
I believe that in gold atoms, 99.994% of the mass comes from its nucleus. Electrons way thousands times less than neutrons and protons, and since the protons/neutrons are nucleons the mass comes from the nucleus.
Mass of electron is about 1837 times less than the mass of proton
Helium has an atomic mass of 4.- Number of Protons/Electrons: 2- Number of Neutrons: 2Lithium has an atomic mass of 7.- Number of Protons/Electrons: 3- Number of Neutrons: 4Helium has TWO less neutrons than Lithium.
At less than critical mass, there are fewer "targets" for neutrons to strike, fission, and release more neutrons. As a result, the reaction dies out.
The majority of the volume in an atom is filled by the neutrons and the protons. Although the electrons do have a volume, they occupy significantly less space than the other two subatomic particles
Yes, there are. Neutrinos are considerably less massive than electrons (which themselves are considerably less massive than protons and neutrons), and photons have no rest mass at all.
The neutrons and protons are in the nucleus which determines the element/isotope. The electrons however define the net charge (ie. positive if there are less electrons then protons and negative if more) and it can be changed more easily, than changing the amount of neutrons . Another reason is that electrons have a tiny mass compared to the protons and neutrons and it wouldn't change the mass number by all that much.