Question

Copper exists in nature as two isotopes. The atomic masses and relative abundance of these isotopes is given in the table. What is the average atomic mass of copper? A. 62. 93 amu B. 63. 55 amu C. 63. 935 amu D. 64. 94 amu E. 127. 87 amu.

Answer 1

The average atomic mass of copper is 63.55.

The correct option is B. 63. 55

What is copper?

Copper is a chemical element with the symbol Cu. This is a metal that is a ductile, malleable, and good conductor of electricity.

Now,

The two isotopes of copper are:

63Cu  with the isotopic mass 62.93

65Cu, with an isotopic mass of 34.93

63Cu has a 69.2% abundance.

65Cu has 30.8% abundance.

The average atomic mass of Cu will be

62.93×69.2% + 64.93×30.8% = 63.55 amu.

Thus, the average atomic mass of copper is 63.55.

Learn more about copper, here:

https://brainly.com/question/13677872