Beryllium is a hard, grayish metal with the atomic number 4 and symbol Be. It is a lightweight element that belongs to the alkaline earth metal group in the periodic table. Beryllium is rare in the Earth's crust but plays an important role in various industries. It is used to make strong, lightweight alloys for aircraft, spacecraft, and missiles. Because of its transparency to X-rays, it is also used in X-ray equipment and nuclear reactors. However, beryllium and its compounds are toxic and must be handled with care.
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Total Questions: 10
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