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Why do elements have a listed average atomic mass and not just atomic mass?
Because most naturally occurring elements are a mixture of isotopes, each having a different atomic mass. These individual isotopic atomic masses must be combined accounting for the amount of each isotope of the element is present to get a weighted average atomic mass.
What is the atomic mass of a human?
The atomic mass of a human is the sum of atomic masses of all the elements that make up the body. On average, a human body is composed mostly of oxygen, carbon, hydrogen, and nitrogen, with trace amounts of other elements. The total atomic mass of a human is about 30 kilograms.
How is the mass number different from the average atomic mass?
The mass number is the total number of protons and neutrons in an atom's nucleus, while the average atomic mass is the weighted average of the masses of all isotopes of an element based on their abundance in nature. The mass number is a whole number, while the atomic mass is a decimal value.
Are the elements listed in order of atomic number or atomic mass?
The elements on the periodic table are listed in order of atomic number, which corresponds to the number of protons in the nucleus of each atom. The atomic mass of each element is typically listed below the element symbol and represents the average mass of the isotopes of that element.
Is the atomic mass used for the mass of an element which has isotopes?
Yes, it must be used as all elements have one or more isotopes and all elements have an atomic mass.
What is the average of the mass numbers of an elements isotopes?
the Atomic Mass
Why is the atomic mass of an element an average?
The atomic mass is an average because most elements consist of a mixture of isotopes.
Elements are ordered according to what?
average atomic mass number
Why do elements have a listed average atomic mass and not just atomic mass?
Because most naturally occurring elements are a mixture of isotopes, each having a different atomic mass. These individual isotopic atomic masses must be combined accounting for the amount of each isotope of the element is present to get a weighted average atomic mass.
What is the difference between the atomic number and average atomic mass?
We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
Do the elements in a row on the periodic table have the same average atomic mass?
no.
How would the modern periodic table would be different if elements were arranged by average atomic mass instead of by atomic number?
how would the modern Periodic Table be different if elements were arranged by average Atomic Mass instead of by atomic number
What elements has an average atomic mass nearest to 31?
It's is element
What is the average mass of the mixture of an elements isotopes?
All of the isotopes in an element's atomic masses divided by the amount of isotopes there are is the weighted-average mass of the mixture of an elements isotopes.
Which number is the atomic mass?
The atomic mass of an element is average of the number of protons in an atom plus the number of neutrons. For example, if you look at a periodic table of elements, Hydroge has the atomic mass of 1.0079.
What is the atomic mass of a human?
The atomic mass of a human is the sum of atomic masses of all the elements that make up the body. On average, a human body is composed mostly of oxygen, carbon, hydrogen, and nitrogen, with trace amounts of other elements. The total atomic mass of a human is about 30 kilograms.
An average of the masses of all the naturallly occurring isotopes of an element?
The weighted average for all isotopes that occur in nature for an element is its atomic weight listed on the Periodic Table of the elements.
