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True or false The number of neutrons is equal to the atomic number?
False. The number of neutrons is not equal to the atomic number. Neutrons are particles found in the nucleus of an atom and their number can vary, whereas the atomic number corresponds to the number of protons in an atom.
Are neutrons a lot lower in mass than protons?
Neutrons and protons have almost the same mass, with neutrons being slightly heavier than protons. The mass of a neutron is approximately 1.0087 atomic mass units, while the mass of a proton is approximately 1.0073 atomic mass units.
True or false- all atoms of the same element have the same atomic number?
The expression true or false atoms is not correct. All atoms are true entities. Each isotope of an element has a different number of neutrons; the number of protons and electrons is constant for all the isotopes of an element.
All the atoms of an element are the same true or false?
A piece of pure Iron contains only one type of atom (Iron atoms) but there is more than one atom in it.
According to the Law of Conservation of Mass in a chemical reaction the total starting mass of all the reactants equals the total final mass of all the products true or false?
False
Are the number of neutrons equal to the atomic number minus the atomic mass?
false
True or false The number of neutrons is equal to the atomic number?
False. The number of neutrons is not equal to the atomic number. Neutrons are particles found in the nucleus of an atom and their number can vary, whereas the atomic number corresponds to the number of protons in an atom.
The atomic number of isotopes is determined by the number of atoms. true or false?
False. Number of neutrons.
Is The number of protons is equal to the atomic mass minus the atomic number.?
false
True or false The number of neutrons always equals the number of protons?
False. The number of electrons always equals the number of protons for an element and this is called the atomic number of an element. The number of neutrons in an element depends on other factors and varies by element and the same element can have different versions with a different number of neutrons. Each version is called an isotopes. The sum of the protons and neutrons in an atom is called the atomic weight. Hydrogen has three isotopes with 0, 1, or 2 neutrons, with atomic weights 1,2, 3). Isotopes with 1 or 2 neutrons are extremely rare. Carbon has four isotopes. It can have 5, 6, 7, or 8 neutrons (atomic weights 11, 12, 13, 14). We commonly refer to different isotopes by its name and weight as in carbon-11, carbon-12, carbon-13, carbon-14. Carbon-12 is common and everywhere. the others are very rare. Carbon-11 and carbon-14 are considered unstable and tend to brake down into other elements over a period of time releasing energy as it happens. This is called radioactivity.
Do Isotopes differ from each other only in the number of electrons contained?
Isotopes differ in the number of neutrons. All atoms are neutral - they always contain the same number of protons (positive) as electrons (negative). If they lose or gain electrons, they become ions. If they lose or gain protons (as in radioactive decay), they become a different element. An element is defined by its atomic number, which is the number of protons. Atoms may differ in their atomic mass. The difference is due to differing numbers of neutrons. The atomic mass on the periodic chart is the proportional average of all the naturally occurring isotopes. To determine how many neutrons in an atom, subtract the atomic number from the atomic mass.
True or false a nucleus is an atomic particle that has no atomic charge?
Assuming the context of this question is atomic physics, the answer is "false" for two reasons: 1) the atomic nucleus is positively charged. 2) the atomic nucleus a tightly bound composite of many particles.
According to the law of conservation of charge in alpha decay the total number of protons on one side of the equation equals the total number of protons on the other side of the equation?
false
When did Moseley discovered Atomic Number?
1914 Using x-ray tubes, determined the charges on the nuclei of most atoms. He wrote"The atomic number of an element is equal to the number of protons in the nucleus". This work was used to reorganize the periodic table based upon atomic number instead of atomic mass.
True or false two isotopes of carbon are carbon-12 and carbon-14 theese isotopes differ from one another by two ELECTRONS?
False. Carbon-12 and carbon-14 are isotopes of carbon that differ in the number of neutrons in their nuclei, not electrons. Carbon-12 has 6 neutrons, while carbon-14 has 8 neutrons. The number of electrons in an atom is determined by its atomic number, which is the same for both isotopes of carbon (6 electrons).
A neutral atom has the same number of protons as it does neutrons?
no. an atom is made up of protons neutrons and electrons. protons have a charge of plus one electrons have a charge of minus one neutrons have no charge. therefore the number of protons and electrons must be equal (balancing the charges) for the atom to be neutral. ;)
Two isotopes of an element have different?
chemical properties. False. Isotopes of an element have the same chemical properties because they have the same number of protons and electrons, which determine the element's chemical behavior. The differences between isotopes lie in their nuclear properties, such as atomic mass and stability.
