Atomic Structure Tutorial Progress: 22/26
Lets see what you've learned! What is true about a PROTON?
charge
mass
location role in the atom
outside nucleus
responsible for
reactivity
0
in nucleus
heavy
+1
virtually zero
-1
holds together the
nucleus
determines the
identity of the atom

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.