•Q1: Compared to
gamma rays, radio waves travel at
the same speed.
•Q2: Two neutral
atoms of the same element but of different
isotopes contain the same number of Electrons
and Protons but not Neutrons.
•Q3: The key
difference between atoms of two different
chemical elements is their number of protons.
•Q4: According to
Wien's law, an object at room temperature
(approximately 300K) will radiate the most energy at a wavelength of 10 microns.
–λ = 3000000 nm/300
= 10000 nm = 10 microns