Question

how many neutrons are in the isotope pictured below? 63 29 cu

Explanation:

Step1: Identify mass number and atomic number

The top - number 63 is the mass number ($A$), and the bottom - number 29 is the atomic number ($Z$).

Step2: Use neutron number formula

The number of neutrons ($N$) is calculated by the formula $N=A - Z$. So, $N = 63-29$.

Step3: Calculate the result

$N=34$.

Answer:

34