Question

14 how many neutrons is in a tellurium atom? (this is a mathematic problem) a 128 b 52 c 76 d 127.60

Explanation:

Step1: Recall atomic - number and average - atomic - mass of Tellurium

Tellurium (Te) has an atomic number \(Z = 52\) and an average atomic mass \(A\approx127.60\). The atomic number is the number of protons.

Step2: Use the formula for the number of neutrons

The formula for the number of neutrons \(N\) in an atom is \(N=A - Z\). For a typical isotope of tellurium, taking the whole - number part of the average atomic mass (since we are looking for a whole - number of neutrons for a single isotope), if we consider a common isotope, and using \(A = 128\) (a common isotope mass number) and \(Z = 52\). Then \(N=128 - 52=76\).

Answer:

C. 76