Question

explain a need of a reference atom for atomic masses. Give some information about the two reference atoms.
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Answer 1

Answer:

Explanation:

if we do not take reference atom for atomic mass the mass values will be more complex to memorize.for example:Hydrogen relative atomic mass is 1amu but if we do not consider the relative atomic mass the actual atomic mass of hydrogen would be 1.673*10^-27 grams this is only for hydrogen imagine the values for other heavy elements

Answer 2

Hello!

➡️Atomic mass is the is the sum of the electrons and the neutrons in the atom.

➡️ Number of electrons is the atomic number.

➡️ Hence to determine the atomic mass the reference of the atom is required

Example to find the atomic mass of atom magnesium Mg we need to know the atomic number of magnesium.

➡️atomic number of magnesium atom is 12 = number of electrons

➡️number of neutrons in the nucleus of magnesium atom is 12

➡️the atomic mass of magnesium atom is 24 (sum of electrons and neutrons)

Thank you!