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How is the mass number of an isotope different from the average atomic mass that is on the periodic table?
The mass number for a particular isotope of an element is a precise value.
The average Atomic Mass for an element is the value you would measure for that element given all the isotopes it has and their abundance in the sample.
What else can I help you with?
Why is the average atomic mass included in the periodic table?
The average atomic mass is included in the periodic table because elements exist as a mix of isotopes with different atomic masses. The average atomic mass accounts for the abundance of each isotope in nature, providing a more accurate representation of the actual mass of an element in a given sample.
What is the average atomic mass of an element is the average atomic masses of what kind of isotopes?
average atomic massof an element=(Atomic mass of first isotope X % of that isotope) + (Atomic mass of second isotope X % of the second isotope)
What is the isotope number used for on the periodic table?
There is not an isotope number on the Periodic Table of Elements. There is an atomic number (# of protons) and the average atomic mass. The average atomic mass is the weighted average of all the naturally occurring isotopes for each element. This number is not a whole number, because it is an average of all the isotopes for a particular element.
Why is the atomic mass of sulfur listed on the periodic table not a whole number?
The atomic mass listed on the periodic table is a weighted average of all the naturally occurring isotopes of sulfur. Since these isotopes have different masses and abundances, the atomic mass is typically a decimal value. It reflects the average mass of all sulfur atoms taking into account the different isotopes and their relative abundances.
Why is atomic mass for an element an average on the periodic table?
The atomic mass is an average because most atoms have isotopes sometimes up to 10 or more. These all have different numbers of neutrons and subsiquently different weights. For this reason an average of these weights needs to be used for the atomic mass.
Why is the average atomic mass included in the periodic table?
The average atomic mass is included in the periodic table because elements exist as a mix of isotopes with different atomic masses. The average atomic mass accounts for the abundance of each isotope in nature, providing a more accurate representation of the actual mass of an element in a given sample.
What is the average atomic mass of an element is the average atomic masses of what kind of isotopes?
average atomic massof an element=(Atomic mass of first isotope X % of that isotope) + (Atomic mass of second isotope X % of the second isotope)
What is the isotope number used for on the periodic table?
There is not an isotope number on the Periodic Table of Elements. There is an atomic number (# of protons) and the average atomic mass. The average atomic mass is the weighted average of all the naturally occurring isotopes for each element. This number is not a whole number, because it is an average of all the isotopes for a particular element.
Why is the atomic mass of sulfur listed on the periodic table not a whole number?
The atomic mass listed on the periodic table is a weighted average of all the naturally occurring isotopes of sulfur. Since these isotopes have different masses and abundances, the atomic mass is typically a decimal value. It reflects the average mass of all sulfur atoms taking into account the different isotopes and their relative abundances.
Why is atomic mass for an element an average on the periodic table?
The atomic mass is an average because most atoms have isotopes sometimes up to 10 or more. These all have different numbers of neutrons and subsiquently different weights. For this reason an average of these weights needs to be used for the atomic mass.
What is a number in parenthesis on a periodic table?
The number in parenthesis on the periodic table represents the atomic mass of an element. It is the weighted average mass of the isotopes of that element, taking into account the abundance of each isotope.
How do you find the atomic number of an isotope?
The atomic number of an isotope is always identical to every other isotope, otherwise, it would form a separate element.
What is the average neutrons in ununpentium?
For each isotope the number of neutrons is different. Number of neutrons = Mass number of an isotope – atomic number
What is the weighted average of the atomic masses of an element's naturally occurring isotopes is called the?
The weighted average of the atomic masses of an element's naturally occurring isotopes is called the atomic mass. This value takes into account the abundance of each isotope in nature when calculating the overall average atomic mass of the element.
Which is a factor in determining the average atomic mass of an element?
The two main factors in determining the average atomic mass of an element are:the isotopic composition of the element (the fraction of each isotope)the atomic mass of each isotope
Mass number Why is it not the number on the periodic table?
Elements have different isotopes and each isotope will have different atomic mass. As such it is not possible to list the mass number of all the isotopes on the periodic table. However, the atomic mass is generally given on the periodic table which is generally calculated taking into account all the isotopes and its percentage.
Why atomic masses are not even numbers?
Atomic mass accounts for the average mass of all of the different isotopes of an atom of a given element and their relative abundance in nature. Therefore, as the number that appears on the periodic table is only an average, there are decimal places included.
