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because the atomic is the sum of no of proton and no of neutron
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ā 12y ago
The mass of an atom depends on the nucleus because the nucleus contains the majority of the atom's mass in the form of protons and neutrons. Electrons, which orbit the nucleus, have a much smaller mass compared to protons and neutrons. The mass of an atom is essentially the combined mass of its protons and neutrons in the nucleus.
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What is the difference between the mass of an atom and the masses of its particles?
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.
What was the discovery about the nucleus from Rutherford?
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.
Does nuclear fission require a full electron shell?
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.
What does the atomic mass and number depend on?
The atomic number depends on the number of protons in an atom's nucleus, while the atomic mass depends on the number of protons and neutrons in the nucleus. Atomic mass is the average mass of all isotopes of an element, weighted by their abundance.
What is the total energy of a revolving electron in an atom?
The total energy of a revolving electron in an atom is the sum of its kinetic energy and potential energy. The kinetic energy is due to its motion, while the potential energy is associated with its attraction to the nucleus via electrostatic forces. The total energy is negative, indicating that the electron is bound to the atom.
What does the nucleus of an atom not contain?
The nucleus of an atom doesn't contain electrons, but it does contain protons and neutrons.
What is the difference between the mass of an atom and the masses of its particles?
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.
What is the fraction of the hydrogen atom's mass that is in the nucleus?
99.95% of the mass of a hydrogen atom is concentrated in its nucleus. This is because the nucleus contains a single proton, which is much more massive compared to the electron(s) orbiting around the nucleus.
What quantities does angular momentum depend upon?
mass, velocity, and radius.
Is radius of gyration depend on mass?
i thing radius of gyration does not depend upon mass because it is the distance between reference axis and the centre of gravity.
Relative to the mass of the nucleus of the atom the mass of electrons is A. always much smaller B. about the same C. always much larger D. dependent upon the element?
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
Why did Rutherford infer that most of the mass and all the positive charge in the atom is in a tiny nucleus?
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.
What is the total amount of charge a nucleus carries?
It depend upon number of protons.It is always possitively charged.
Does the properties of an element depend upon both the number and type of subatomic paritcles in an atom?
Yes.
Does kinetic energy depend on mass when body is acted upon by a constant forceant?
No.
On what factor does the inertia of a body depend?
inertia simply depends upon mass.
What was the discovery about the nucleus from Rutherford?
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.
