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

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7 votes

Answer:

20 neutron

Step-by-step explanation:

neutron=atomic mass-atomic no.

=39-19

=20

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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

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