An ion from a given element has 20 protons and 18 electrons. What is the charge on the ion? |
I
What is the name of the element?
What is the symbol for the ion?

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.