An element Q has three naturally occurring isotopes. One of the isotopes has a mass of 20amu and an abundance of 90.48%, the second has a mass of 21amu and abundance of 0.27% and the third has a mass of 22amu. Calculate the percentage abundance of the third isotope.
Calculate the relative atomic mass of element Q

i think so it’s will be b yes i believe its

c

explanation:

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.