9.    An atom that gains two electrons becomes a(n)
        a.  positively charged ion                 b.   negatively charged ion       
        c.  polar molecule                             d.   covalent molecule

Electrons are negatively charged particles.  If an atom gains two of these negatively charged particles, it is no longer a neutral atom.  It now is an ion with a charge of minus two. 

home13.gif (1441 bytes)BIOWEB  home13.gif (1441 bytes)Al BIO 101 Web Section  home13.gif (1441 bytes)ELI BIO 101 Web Section 
email.gif (404 bytes) nverdae@nvcc.edu
Emma Erdahl, Associate Professor of Biology
Northern Virginia Community College
Revised 8/23/00