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Which best describes the definition for the atomic mass of an element?
The atomic mass of an element is the average mass of an element's isotopes, weighted by their natural abundance. It is expressed in atomic mass units (u) and is often close to the mass number of the most abundant isotope of the element.
How is the molar mass of an element related to average atomic mass?
The molar mass of an element is the mass of one mole of atoms in that element. It is directly related to the average atomic mass, which is the weighted average of the masses of all isotopes of that element based on their natural abundance. The molar mass is usually very close to the average atomic mass of the element.
The number shown on the top part of each of the element squares in a periodic table is the?
This depends on the periodic table but it is either the atomic number (the number of protons) or the atomic mass (the number of protons and neutrons). The integer number will be the atomic number and the larger number will be the atomic mass. The exception is hydrogen which has an atomic number of 1 and an atomic mass of 1 (very close to it).
What determines the atomic mass of an element?
The atomic weight of an atom depends on the number of protons and neutrons in one atom of the element, and is usually the average mass of all the known natural isotopes of the element. The atomic weight refers to the force of gravity on one atom of the element.After the IUPAC rules the atomic mass is a term used only for the mass of isotopes; and the atomic weight is the term used for an element.The atomic weight of an atom is determined by the mass of its constituent particles, the protons, electrons, and neutrons. In practice, however, the electrons are so much smaller than the protons and neutrons, and the neutrons are close enough to the mass of the protons, that it is common to say that the atomic weight is the number of protons plus the number of neutrons. This is not exact, however, and the periodic table reflects this.
Is an atom with an atomic number of 1 stable?
The atom with an atomic number of 1 is Hydrogen. Hydrogen only has one electron and is very unstable because it is very close to the nucleus and has an incomplete valence shell holla back
What would cause the average atomic mass of an element to be close to a whole number?
It would be because if you are averaging a number there is a chance that it could be a whole number or not. Jake Caterinea
Which atomic mass number is closest to the average atomic mass of chlorine?
The periodic table is listed by atomic number which is highly related to atomic mass. Therefore the close ones would be to the left (Sulfur) and right(Argon). Sulfur is closest with an average distance of about 3.5 AMU.
What is the general relationship between atomic number and atomic mass weight?
As atomic number rises so does the atomic mass. There is no close relationship. Atomic number is the number of protons in the nucleus. Average atomic mass takes the mass of naturally occurrring isotopes which include the mass of the varying numbers of neutrons present which account for a large proportion of the overall mass of an atom.
Which best describes the definition for the atomic mass of an element?
The atomic mass of an element is the average mass of an element's isotopes, weighted by their natural abundance. It is expressed in atomic mass units (u) and is often close to the mass number of the most abundant isotope of the element.
What is the formula for finding the amount of neutrons in an element?
The formula for finding the amount of neutrons in an element is: Number of neutrons = Atomic mass number - Atomic number. The atomic mass number represents the sum of protons and neutrons in the nucleus of an atom, while the atomic number represents the number of protons. Subtracting the atomic number from the atomic mass number gives you the number of neutrons.
How is the molar mass of an element related to average atomic mass?
The molar mass of an element is the mass of one mole of atoms in that element. It is directly related to the average atomic mass, which is the weighted average of the masses of all isotopes of that element based on their natural abundance. The molar mass is usually very close to the average atomic mass of the element.
Do all isotopes have whole number atomic masses?
The short answer is yes. The long answer is that isotopes have different numbers of neutrons than other isotopes of the same element, so when expressing the mass of an isotope, you don't take an average; you just add the number of neutrons and the number of protons. However, that number is not entirely accurate since the mass of a proton and a neutron are very slightly different. So, if you want to be very exact, then no, the mass of an isotope is not a whole number, but it is very, very close.
The number shown on the top part of each of the element squares in a periodic table is the?
This depends on the periodic table but it is either the atomic number (the number of protons) or the atomic mass (the number of protons and neutrons). The integer number will be the atomic number and the larger number will be the atomic mass. The exception is hydrogen which has an atomic number of 1 and an atomic mass of 1 (very close to it).
What is Carbon-12 atomic mass?
12. The number 12 refers to the atomic mass. More precisely, to the sum of neutrons + protons; but this is usually close to the atomic mass. In the case of carbon-12, it is exact, by definition.
What are diifferent between mass number and atomic number?
The atomic number represents the number of protons in the nucleus. It determines what element you're talking about. Numbered from 1 to over 100. The mass number represents the total of protons AND neutrons in the nucleus. It is close to (not the same as) the atomic mass. Isotopes can have different mass numbers but belong to the same element (same atomic number). The number of neutrons (not having a special 'name') varies from 0 to over 150.
What determines the atomic mass of an element?
The atomic weight of an atom depends on the number of protons and neutrons in one atom of the element, and is usually the average mass of all the known natural isotopes of the element. The atomic weight refers to the force of gravity on one atom of the element.After the IUPAC rules the atomic mass is a term used only for the mass of isotopes; and the atomic weight is the term used for an element.The atomic weight of an atom is determined by the mass of its constituent particles, the protons, electrons, and neutrons. In practice, however, the electrons are so much smaller than the protons and neutrons, and the neutrons are close enough to the mass of the protons, that it is common to say that the atomic weight is the number of protons plus the number of neutrons. This is not exact, however, and the periodic table reflects this.
Is an atom with an atomic number of 1 stable?
The atom with an atomic number of 1 is Hydrogen. Hydrogen only has one electron and is very unstable because it is very close to the nucleus and has an incomplete valence shell holla back
