Question

question 7 of 10
an atom of boron (b) has 5 protons and 6 neutrons. what is its mass number?
a. 5
b. 6
c. 11
d. 16

Explanation:

Step1: Recall the formula for mass number

Mass number \(A = \text{Number of protons}(p)+\text{Number of neutrons}(n)\)

Step2: Substitute the given values

Given \(p = 5\) and \(n=6\), then \(A=5 + 6\)

Step3: Calculate the result

\(A=11\)

Answer:

C. 11