Sodium forms a 1+ ion, while fluorine forms
a l-ion. Write the electron configuration for each ion.
Why don't these two elements form 2+ and 2-ions,
respectively?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved

Type the letter that represents the correct location for each particle type below. the neutron is found at __ the electron is found at __ the proton is found at __