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What does a nucleus mean in science?
In science, a nucleus refers to the central part of an atom that contains protons and neutrons. It is the dense core of an atom where the majority of its mass is concentrated. The nucleus is positively charged due to the presence of protons.
When does a nucleon have more mass?
A nucleon has more mass when it is not bound to the nucleus of an atom. When the nucleon is bound to other nucleons the binding energy that keeps them together comes from the mass of the nucleon. Therefore the mass of a single nucleon will be smaller in an atom than on it's own.
What are the main points of Rutherford's nuclear model of an atom?
1.Positive charged particle is present at the center of an atom and it is known as the nucleus which consists of the major mass of the atom. 2.The atoms are neutral due to the presence of equal charge of negatively charged electron and positive charged nucleus. 3.The electrons move around the nucleus as the planets move round the sun and the centrifugal force of nucleus is equal to the charge of the moving electrons.
Were does the energy contained in an atom come from?
The atomic weight of a chemical element is determined experimentally taking into account the isotopic composition of this element and the atomic masses of these isotopes.
Does the nucleus of an atom have a positive or negative charge?
Usually, the whole atom is neutral. However, the nucleus has a positive charge because it is made up of protons and neutrons. Protons have positive charges but neutrons have no charge at all.The atomic nucleus has a positive charge.
Where in the atom do you find the mass of the the atom?
The mass of an atom is primarily located within the nucleus, which contains protons and neutrons. Electrons, which orbit the nucleus, contribute very little to the overall mass of the atom due to their much smaller mass compared to protons and neutrons.
Which best describes the nucleus of an atom?
The nucleus of an atom is the densest part of an atom. It contains the protons and neutrons of an atom.
What does a nucleus mean in science?
In science, a nucleus refers to the central part of an atom that contains protons and neutrons. It is the dense core of an atom where the majority of its mass is concentrated. The nucleus is positively charged due to the presence of protons.
What is the hard core of an atom?
The hard core of an atom refers to the nucleus, which is the central region of an atom containing protons and neutrons. It has a positive charge due to the presence of protons and accounts for almost all of the atom's mass. Electrons orbit around the nucleus in electron clouds.
What are helium atom nucleus?
The nucleus of a helium atom contains two protons and usually two neutrons, giving it an atomic mass of 4 atomic mass units. It is positively charged due to the protons it contains, while the electrons orbit around the nucleus in the electron cloud.
Is Most of the mass in an atom is in electrons?
the mass of electrons is negligble the pe rcentage of an atom's mass comes from its protons and neutrons
How do the ways in which the mass and the charge of an atom are distributed differ?
IF it donates an electron -then atom gains positive charge and if it accepts an electron then it acquires negative charge. the mass of an atom is dependent on protons and neutrons in the nucleus and electrons decide the charge of an atom
What is an assembly of protons and neutrons within an atom called?
An assembly of protons and neutrons within an atom is called a nucleus. It is the central part of an atom that contains most of the mass of the atom and is positively charged due to the protons it contains.
When does a nucleon have more mass?
A nucleon has more mass when it is not bound to the nucleus of an atom. When the nucleon is bound to other nucleons the binding energy that keeps them together comes from the mass of the nucleon. Therefore the mass of a single nucleon will be smaller in an atom than on it's own.
Is it true that The atomic mass is equal to the atomic number?
No, the atomic mass is not equal to the atomic number. The atomic number represents the number of protons in an atom's nucleus, while the atomic mass is the sum of protons and neutrons in the nucleus. The atomic mass can differ from the atomic number, especially due to the presence of neutrons.
Nucleus of a helium atom?
The nucleus of a helium atom contains two protons and usually two neutrons, giving it a total atomic mass of 4 atomic mass units. This nucleus is positively charged due to the presence of protons, while electrons orbit around it in the electron cloud to balance the charge.
What is the center of an atom is dense region consisting of proton and neutron is called?
The dense region at the center of an atom, consisting of protons and neutrons, is called the atomic nucleus. It contains the majority of the atom's mass and is positively charged due to the presence of protons. Electrons orbit around the nucleus in the electron cloud.
