Question Detail

CHM 101 CHM 101 Past Questions Objective Question
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Question

How many neutrons are present in an atom of potassium-39 (³⁹K)? (Atomic number of K = 19)
Options
A 19
B 20
Correct Answer
C 39
D 58
Correct Answer

Option B is the correct answer.

Detailed Explanation

Number of neutrons = mass number - atomic number = 39 - 19 = 20.

Hint

Neutrons = Mass Number - Atomic Number.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1282 of 1872
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