I think it’s , D. This can cause sonic booms that can damage building structures
Answer:
Be,Mg,Ra etc
Explanation:
It should be palced in group 2A because as it reacts with chlorine in ratio of 1:2 . It's valancy is 2 and is metal as it react with non metal donating two electrons .
one more thing it fits there orderly
53.6 hectometers is not equal to 0.536 kilometer
B. Hydrogen is the answer
