Thursday
November 20, 2014

Homework Help: Atoms ASAP

Posted by mathidislikeperson on Friday, December 20, 2013 at 1:28am.

An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. It therefore has ______ neutrons in its nucleus.

a. 19
b. 39
c. 20
d. 2

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Science - 1. Which statement about subatomic particles is NOT true? (1 point) ...
Chemistry - The standard atom for the atomic masses of all the elements is the ...
chemistry - 1.what is meant by atomic number of an element? 2.the mass number of...
Final Exam- Honors Physical Science - how can you determine the number of ...
Science-Periodic Table - whats the connection/relationship between the # of ...
US History - 41. A neutron atom of potassium has an atomic number of 19 and an ...
Chemistry - 41. A neutron atom of potassium has an atomic number of 19 and an ...
chemistry - I wanted to check my True and False Chemistry HW. I am not 100% they...
Chemistry - Congratulations! You have discovered a new element called Bhauzium (...
Chemistry - Naturally occurring boron is 80.20% boron-11 (of atomic mass 11.01 ...

Search
Members