1. If an atom has a mass # of 209 and has 127 neutrons in its nucleus, what is the name of this element?

2. If another atom has 92 protons and has a mass # of 240, what is the name of the atom and how many neutrons does it have in its nucleus?

Leave a Reply

 

 

 

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>