because the atomic is the sum of no of proton and no of neutron
The nucleus of an atom contains essentially all the mass. The mass of an electron is 1/1836 of that of a proton.So, since the nucleus contains both neutrons and protons, and the number of electrons is equal to the number of protons; for a reasonable massy atom, the mass of the electrons will be roughly 1/(2 x 1836) of the atom.
It is true that an atom has a nucleus. As for which model of the atom is thought to be true, at the present time we use a model based upon quantum mechanics which differs significantly from the early Rutherford or Bohr atomic models.
No, nuclear fission refers to the splitting of atomic nucleus into two or more smaller nuclei, it does not depend on the arrangement of electrons in the outer shell of the atom. The process is driven by the instability of certain heavy isotopes, which leads to the splitting of the nucleus upon absorbing a neutron.
As electrons have almost negligeable mass when compared to a proton, the mass of an atom mostly depends on the number of protons and neutrons in its nucleus. The mass of an electron is almost 1800 times smaller than the mass of a proton or neutron so in most calculations it can be safely assumed to be zero. In other words the mass of an atom depends on its atomic number.
The energy of an electron which is (in a sense) revolving around the nucleus (it is actually distributed around the nucleus in the form of a cloud) depends upon how far it is from the nucleus, and also depends upon the number of protons in the nucleus. Nuclear physics is complicated.
Atomic Mass. This can vary depending upon the number of neutrons in the nucleus. Whereupon it is known as an ISOTOPE. Do NOT confuse Atomic Mass , with Atomic Number(Z). The Atomic Number is an elements position in the Periodic Table, AND the number of PROTONS in the nucleus.
The nucleus of an atom doesn't contain electrons, but it does contain protons and neutrons.
The nucleus of an atom contains essentially all the mass. The mass of an electron is 1/1836 of that of a proton.So, since the nucleus contains both neutrons and protons, and the number of electrons is equal to the number of protons; for a reasonable massy atom, the mass of the electrons will be roughly 1/(2 x 1836) of the atom.
The precise figure varies from element to element and isotope to isotope depending on the number of neutrons in the nucleus, however it is always at least 99.95% which is the ratio between an electron and a proton.
mass, velocity, and radius.
i thing radius of gyration does not depend upon mass because it is the distance between reference axis and the centre of gravity.
I'd say that the answer is A, always much smaller. The actual mass of an electron in grams is 9.11 x 10-28 grams, while the mass of one proton (or neutron) is about 1.675 x 10-24 grams. Since all the protons and neutrons are located in the nucleus, and the total number of protons and neutrons is about twice the number of electrons, the relative mass of the electrons to the nucleus should always be much smaller. Rohit Bose Eighth-grade genius :D
He decided upon this conclusion because when he put a thin sheet of foil and got some atomic bullets and fired them at it, most of the bullets just went straight through because there was nothing stopping them. but a few were deflected and so he decided that the bits where the bullets were deflected must hold all the mass of the Atom.
It depend upon number of protons.It is always possitively charged.
Yes.
inertia simply depends upon mass.
No.