You will need to go on yt
Hello there,
The answer to your question is:
C. Zinc
Hope this answer helps you.
It's called a compound because different elements are held together by a chemical bond.
Answer:
all the elements in the same period have the same valence electrons.
The half life of uranium- 238 is
4.46 x10^9 years
Explanation
Half life is the time taken for the radioactivity of a isotope to fall to half its original value.
The original mass of uranium-238 is 4.0 mg
Half of original mass of uranium = 4.0 mg /2 = 2.0 mg
since it take 4.46 x 10^ 9 years for the sample to half the half life of uranium -238 = 4.46 x10^9 years
