There is alpha, beta, and gamma radiation. Gamma radiation can damage our tissue and DNA. Alpha and Beta can deflected but even gamma radiation can somewhat pass through concrete.
Answer:
When a atom is unstable (It wants to gain or lose a valence electron)
Answer:
because high intermolecular fotce
Answer: 40,132,418,653,700 km
Explanation:
1 light year=9460730470000 kilometers
4.242*9460730470000 km=40132418653700 km
