Potassium has an atomic number of 19 and a mass number of 39. How many neutrons does a Potassium atom have? A. 18 B. 19 C. 20

asked Oct 7, 2023 57.2k views

6 votes

Potassium has an atomic number

of 19 and a mass number of 39.
How many neutrons does a
Potassium atom have?
A. 18
B. 19
C. 20

5.3k points

Please log in or register to add a comment.

7 votes

Answer:

20 neutron

Step-by-step explanation:

neutron=atomic mass-atomic no.

=39-19

=20

5.7k points

4 votes

Answer: C) 20

Detailed Explanation:

No. of Neutrons = Mass No. - Atomic No.

Therefore,
= 39 - 19
=> 20

No. Of Neutrons = 20

Earachefl answered Oct 12, 2023

5.4k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.9m questions

7.7m answers