Multiple Choice
The identity of a chemical element is determined by which of the following?
34
views
2. Atoms & Elements
The Atom
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Manganese has an atomic number of 25 and a mass number of 55. How many neutrons does a typical atom of manganese contain?
A
55
B
25
C
80
D
30
Verified step by step guidance1
Identify the atomic number (Z) of manganese, which is the number of protons in the nucleus. For manganese, Z = 25.
Identify the mass number (A) of manganese, which is the total number of protons and neutrons in the nucleus. For manganese, A = 55.
Recall the relationship between mass number, protons, and neutrons: \(A = Z + N\), where \(N\) is the number of neutrons.
Rearrange the formula to solve for the number of neutrons: \(N = A - Z\).
Substitute the known values into the equation: \(N = 55 - 25\) to find the number of neutrons in a typical manganese atom.
Related Videos
Related Practice
