Homework Help: chemistry

Posted by mary on Thursday, April 14, 2011 at 7:06pm.

I need help on a few of these.

A. How many protons are in one atom of fluorine - 19?
B. How many neutrons are in one atom of potassium - 39?
C. How many electrons are in one neutral atom of V - 51?
D. What is the symbol for the element that has 78 protons?
E. What is the symbol for the neutral atom that has 52 electrons?

chemistry - bobpursley, Thursday, April 14, 2011 at 7:11pm
You are missing quite a lot here.

Look up these definitions: Atomic number; atomic mass number
Then go here
http://www.ptable.com/

I will be happy to check your work.

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