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The "mass defect" -- the fact that the mass of an isotope is less that the sum of its nucleons is due to the fact that when nucleons combine (either by fusion, for elements with atomic number less than iron[A=26]; or fission for elements with atomic number greater than iron) there is a release of energy due to the nuclear binding force, which source of the "mass defect" you correctly identified. The energy released as a result of the binding of the nucleons is equivalent to a small amount of mass of the matter -- Einstein's famous equation: E=mc^2, so the energy release E
What else can I help you with?
Why is it unnecessary to include the electrons when determining the mass of an atom?
Electrons have a negligible mass compared to protons and neutrons, contributing only about 1/1836 of the mass of a hydrogen atom. Since the mass of an atom is predominantly determined by the mass of its nucleus, which consists of protons and neutrons, including electrons does not significantly affect the overall mass calculation. Thus, for most practical purposes, the mass of an atom can be accurately determined using only the masses of its protons and neutrons.
What is Atomic mass units of an atom that contains 8 protons 9 neutrons 8 electrons?
The atomic mass unit of an atom is the sum of the protons and neutrons in its nucleus. In this case, with 8 protons and 9 neutrons, the total atomic mass unit of the atom would be 17. The number of electrons does not significantly affect the atomic mass unit of an atom.
How many electrons are present in bromine atom with mass number of 87?
A bromine atom, regardless of its mass number, has an atomic number of 35, which means it has 35 protons and, in a neutral state, also 35 electrons. Therefore, a bromine atom with a mass number of 87 will have 35 electrons. The mass number indicates the total number of protons and neutrons, but it does not affect the number of electrons in a neutral atom.
The relative atomic mass of an atom can be found by comparing the mass of the atom to the mass of?
The Hydrogen atom. Beware, Hydrogen has an atomic mass based on one proton, as it doesn't have a neutron. So Helium has a mass of four times Hydrogen.
What represents most of an atom's mass?
The nucleus of an atom represents most of an atom's mass.
What is the number of neutrons in an atom affects the atomic what?
The number of neutrons in an atom can affect the atomic mass of an atom.
What adds mass to an atom but does not affect its charge?
a neutron
Does the proton affect the mass of an atom?
Yes, significantly so. One proton is approximately one atomic mass unit.
Why is it unnecessary to include the electrons when determining the mass of an atom?
Electrons have a negligible mass compared to protons and neutrons, contributing only about 1/1836 of the mass of a hydrogen atom. Since the mass of an atom is predominantly determined by the mass of its nucleus, which consists of protons and neutrons, including electrons does not significantly affect the overall mass calculation. Thus, for most practical purposes, the mass of an atom can be accurately determined using only the masses of its protons and neutrons.
What is Atomic mass units of an atom that contains 8 protons 9 neutrons 8 electrons?
The atomic mass unit of an atom is the sum of the protons and neutrons in its nucleus. In this case, with 8 protons and 9 neutrons, the total atomic mass unit of the atom would be 17. The number of electrons does not significantly affect the atomic mass unit of an atom.
Is an oxygen atom have twice the mass of a sulphur atom?
No, an oxygen atom does not have twice the mass of a sulfur atom. An oxygen atom has a mass of approximately 16 atomic mass units (amu), while a sulfur atom has a mass of approximately 32 amu. Therefore, a sulfur atom has twice the mass of an oxygen atom.
What prolonged deficiency would affect thyroid?
A deficiency in the element Iodine in the diet.
How many electrons are present in bromine atom with mass number of 87?
A bromine atom, regardless of its mass number, has an atomic number of 35, which means it has 35 protons and, in a neutral state, also 35 electrons. Therefore, a bromine atom with a mass number of 87 will have 35 electrons. The mass number indicates the total number of protons and neutrons, but it does not affect the number of electrons in a neutral atom.
The relative atomic mass of an atom can be found by comparing the mass of the atom to the mass of?
The Hydrogen atom. Beware, Hydrogen has an atomic mass based on one proton, as it doesn't have a neutron. So Helium has a mass of four times Hydrogen.
Why do you say electrons most affect an atom's size while protons and neutrons most affect an atom's mass?
because the electron are on the out side and orbit around the nucleus (aka protons and neutrons) and take up the space
What represents most of an atom's mass?
The nucleus of an atom represents most of an atom's mass.
What is the excess or deficiency of an atom?
The excess or deficiency of an atom typically refers to the imbalance of electrons relative to protons in an atom, resulting in the formation of ions. An excess of electrons leads to a negatively charged ion (anion), while a deficiency of electrons results in a positively charged ion (cation). This imbalance affects the atom's chemical properties and reactivity, influencing how it interacts with other atoms and molecules.
