Question

Naturally occurring hydrogen consists of three isotopes, hydrogen-1 (1.01 u),

hydrogen-2 (2.02 u) and hydrogen-3 (3.01 u), where the isotopic masses are given in parentheses. Use the periodic table and determine which isotope is present in the larger percentage in the natural element.
a. Hydrogen-1
b. Hydrogen-2
c. Hydrogen-3
d. Each is present at equal percentages.

Answer 1

Each is present at equal percentage

Answer 2

Hydrogen-1

Step-by-step explanation:

Not sure what kind of explanation is needed for your question, because it doesnt specify.

The easiest should be:

Average mass of an element is calculated as the sum of the multiplication of each isotope by its percentage

And the mass of the hydrogen is 1, therefore the more abundant is hydrogen-1