### Boron-10 and boron-11 are the naturally occurring…

01:14
Case Western Reserve University
Problem 101

What is the mass number of potassium- 39$?$ What is the
isotope's charge?

Potassium-39 has mass number 39 and has no charge as it is neutral.

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## Video Transcript

potassium 39. It's a mass number of 39 which is off of the 39th round here and potassium. There is no charge giving. It is neutral, therefore, we can conclude noted.