Hydrogen (H) was first, followed by helium (He).
Answer:
CT Scan
Explanation:
Radiology is a branch of medicine that uses imaging technology to diagnose and treat disease. So, an example of a radiology technology that is useful for viewing tumors is Computed Tomography (CT)Scan. Others include Magnetic resonance imaging (MRI), X-rays etc.
Yes it is a exothermic reaction.
Yes <u><em>true</em></u>
I can't come up with a good explanation.
Red because it has the highest visibility from a far distance