So I'm struggling a bit with a chart I'm filling out. I have to find the Atomic number, Mass number, Number of Protons, Electrons and Neutrons.

For Cu2+, I was given it has 24 neutrons. With a 2+ charge.
How would I find the rest of the information needed with what I was given.

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Why is carbon ideal for making different compounds?

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor