Question

which isotopes are more abundant (a)- even atomic mass isotops (b)odd atomic mass isotops (c) even atmoic mass and even atmoic number isotops ??​

Answer 1

Answer:

Of the three hydrogen isotopes, H-1 is closest in mass to the weighted average; therefore, it is the most abundant.11

To determine the most abundant isotopic form of an element, compare given isotopes to the weighted average on the periodic table. For example, the three hydrogen isotopes (shown above) are H-1, H-2, and H-3. The atomic mass or weighted average of hydrogen is around 1.008 amu ( look again to the periodic table).