GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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determined by counting the number of isotopes in a sample of the element
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equal to 1/12 the mass of the most common isotope
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is a weighted average
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based on isotopes charge
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Detailed explanation-1: -The average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the element.
Detailed explanation-2: -Which statement about an element’s average atomic mass is correct? it is weighted average, so common isotopes have a greater effect than uncommon ones.
Detailed explanation-3: -The Weighted average refers to average atomic mass of a specific element. This value references to the mass and percent abundance of all the isotopes of an element. The weighted average can be found in the atomic mass value of the periodic table.
Detailed explanation-4: -The atomic mass of an element is the weighted average of the masses of the naturally occurring isotopes. When one or more electrons are added to or removed from an atom or molecule, a charged particle called an ion is produced, whose charge is indicated by a superscript after the symbol.
Detailed explanation-5: -The reason this is done is because there is no set mass for an element. Multiple isotopes result in multiple masses, and the easiest way to compensate for this is to take the weighted average and use that as the mass of the element.