Question

how many neutrons are there in cesium cesium-131 has a mass number of 131; an number of 55. 55 78 76 131 rewatch

Explanation:

Step1: Recall neutron count formula

$\text{Number of neutrons} = \text{Mass number} - \text{Atomic number}$

Step2: Substitute given values

$\text{Number of neutrons} = 131 - 55$

Step3: Calculate the result

$131 - 55 = 76$

Answer:

76 (corresponding to the option with value 76)