Question

The two naturally occurring isotopes of copper are copper-63 and copper-65. how many neutrons are in one atom of copper-65? 29 34 36 65

Answer 1

It's 36. Since copper has 29 protons you do 65-29=36

Answer 2

Answer: The number of neutrons in copper-65 are 36.

Explanation:

Atomic number is defined as the number of protons that are present in an atom. It is represented as 'Z'

Z = Atomic number = Number of protons

Atomic mass of an element is defined as the sum of number of neutrons and number of protons that are present in an atom. It is represented as 'A'.

A = Atomic mass = Number of neutrons + Number of protons

For Copper, the atomic number is 29.

We are given:

Atomic mass of copper-65 = 65

Number of neutrons = 65 - 29 = 36

Hence, the number of neutrons in the given isotope of copper are 36.