Answer:
146
Explanation:
uranium is 92 and the mass number of the isotope is given as a 238 therefore it is not the two protons 92 electrons and
real explanation Google it
Answer:
Rb
Explanation:
This is because they are in the same group which means they share similar properties.
With this temperature the Earth Radiation will be centered on a Wavelength!
Answer:the branch of science which examines the material of the universe and changes that these materials undergo
Chemistry deals with composition,structure,properties of matter and changes that these materials undergo