What would you like to do?

# What is the weighted average mass of all the know isotopes for an element?

Would you like to merge this question into it?

#### already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

#### exists and is an alternate of .

It is its Atomic Mass and why atomic mass is frequently not a whole number.
1 person found this useful
Thanks for the feedback!

# What is the weighted average of the masses of the isotopes of an element?

Atomic Mass   The technical answer would be average atomic mass   Is the "atomic mass found on the periodic table.

Atomic mass

# What is a weighted-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.

# The weighted average of the masses of all the naturally occurring isotopes of an element is the what?

Average atomic mass of the element.

# What is the weighted average of all of the isotopes of an element?

The answer is the atomic weight of the original element: It's the number on the top left of each element square of the periodic table.

# An average of the masses of all the isotopes that occur in nature for an element is the?

Atomic weight or atomic mass used in stoichiometric calculations.

# The weighted average mass of an elements isotopes?

What. (your question isn't even a complete sentence.)

# An average of the masses of all the isotopes that occur in nature for an element is?

The atomic weight of the element

# The weighted average mass of all of an elements naturally occurring isotopes is the elements what?

  base structure

# What is the weighted-average mass of all the known isotopes for an element?

The "atomic mass" or "atomic weight" number shown along with the element symbol in most periodic tables.

# What is the average mass of all the known isotopes for an element called?

The Atomic mass of that element.

# What is An average of the masses of all isotopes that occur in nature for 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.

# Is An atom's atomic mass unit is equal to the weighted average of the masses of all the naturally occurring isotopes of that element?

Atomic unit mass (symbol u): 1/12 of the mass of an atom of carbon 12 in ground state and at rest (IUPAC definition). Sometimes used synonym: Dalton (Da) 1 u = 1, 660 538

# The weighted averages of the masses of all naturally occurring isotopes of an element?

Average atomic mass

# What is the term for the weighted average mass of all the naturally occurring isotopes of an element?

Pretty sure it is "Relative Atomic Mass" or "Mr"

# What is the known weighted-average mass of all the known isotopes for an element?

The known weighted-average mass of all the naturally occurring* isotopes for an element is the atomic mass of the element.____________________ *This is not the same as "all th

# What is the weighted average mass of all the the known isotopes of an element called?

The "atomic mass". If the mass is expressed in units of grams as is usual, the mass would be called "gram atomic mass." Sometimes, especially several decades or more ago, the