0
What is the weighted average mass of all the know isotopes for an element?
Wiki User
∙ 6y ago
It is its Atomic Mass and why atomic mass is frequently not a whole number.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
If an element has 3 isotopes with known masses what other information is needed to find the average atomic mass of the element?
You would also need to know the abundance of each of the isotopes, i.e., how much percent of each you will typically encounter.
How is the average mass number of an element is determained?
The atomic number (the mass) of an element is determined by finding the masses of the isotopes of that element, adding them all together, and dividing by the number of isotopes. (The Atomic number is the average of all the masses.)
If an element has three isotopes with known natural abundance percentages what other information is needed to find the average atomic mass of the element?
The abundance percentage of each isotope
Did the existence of isotopes affect the validity of the atomic theory?
Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass). Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass).
What are the importance of isotopes in various fields of life?
Well the term "isotopes" refers to atoms of an element that have the same quantity of protons but differ in the number of neutrons they possess. Isotopes of an element all have the same chemical behavior, but the unstable isotopes undergo spontaneous decay during which they emit radiation and achieve a stable state. This property of radioisotopes is useful in food preservation, archaeological dating of artifacts and medical diagnosis and treatment.
How do you know the difference between isotopes and an element?
Isotopes are atoms of an element having different number of electrons.
If an element has 3 isotopes with known masses what other information is needed to find the average atomic mass of the element?
You would also need to know the abundance of each of the isotopes, i.e., how much percent of each you will typically encounter.
How do you know that hydrogen has isotypes?
every element has isotopes.
As an element occurs as a mixture of naturally occurring isotopes what is the atomic mass of the element based upon?
The atomic mass of an element is based upon the weighted average of the atomic masses of the naturally occurring isotopes of that element. We need to know what isotopes of a given element occur in nature, and what percentage of the natural abundance of an element each of those naturally occurring isotopes represents. What that means might be more easily seen if we just run through some examples. So let's run through some.We have an element with 3 naturally occurring isotopes. They occur equally. That is, each one represents a third of the natural atoms, or 33 1/3 % of them. If the atomic masses of our isotopes are 17, 18 and 19, and all occur equally, then it's 17 + 18 + 19 (which equals 54) divided by 3 which is 54 divided by 3 which is 18. Our atomic mass for the element cited is 18, and that represents all the natural isotopes and the percentage in which they occur. Pretty easy.We have an element with 4 naturally occurring isotopes. Here are their atomic masses and percent abundance: a = 46 (25%), b = 47 (50%), c = 48 (15%), and d = 49 (10%). There is a (fairly) simple process one can use to find the weighted average. Multiply the percent natural abundance times the atomic mass of each one and add them all together. Not to difficult, is it? Roll up your sleeves and let's have at it.46 x 25% = 11.547 x 50% = 23.548 x 15% = 7.249 x 10% = 4.911.5 + 23.5 + 7.2 + 4.9 = 47.1 atomic mass unitsSo now we have our atomic mass for our mystery element in example two. We calculated it by determining a weighted average of the naturally occurring isotopes. And that's very important information to take to the lab where we'll be measuring (weighing) some of this stuff.
How is the average mass number of an element is determained?
The atomic number (the mass) of an element is determined by finding the masses of the isotopes of that element, adding them all together, and dividing by the number of isotopes. (The Atomic number is the average of all the masses.)
Atomic mass of an atom is called?
What do you mean? Atomic mass of an atom is the weighted average mass of all the naturally occurring isotopes of that element, measured in amu (=atomic mass unit). I do not know how do you want to call it, it is just atomic mass, average atomic mass, mass of an atom, atom's mass...
What data must you know about the the isotopes of an element to calculate the atomic mass of an element?
Number of protons
Why need to know the percentage of each isotope of an element to determine the atomic mass?
Because each isotope of an element has a mass different from any other isotope of the same element, and the atomic mass of an element is an average, weighted by the proportion of each isotope, in the naturally occurring element.
How do you know whether not atoms are isotopes?
Isotopes of a chemical element have a similar number of protons but a different number of neutrons.
If an element has 3 isotopes with known natural abundance percentages what other information is needed to find the average atomic mass of the element?
You still need to know the number of protons present in order to find the atomic mass.
What are different atomic forms of an element?
The two forms in which the atoms of an element may exist are isotopes. These consist of protons and neutrons.
Three example of element that exhibit isotope and their isotopes?
please i need to know 2 elemnts that exibit isotopy
