Question

examine the isotope below, then indicate the number of neutrons for this isotope. 235 92 u 92 143 327 235

Explanation:

Step1: Identify mass number and atomic number

The mass number \(A = 235\), the atomic number \(Z=92\).

Step2: Use formula for neutrons

The formula for the number of neutrons \(N\) is \(N=A - Z\).
Substitute \(A = 235\) and \(Z = 92\) into the formula: \(N=235 - 92\).
Calculate \(235-92 = 143\).

Answer:

143