Beryllium metal is as hard as:
Correct answer: A. Fe
- A. Fe
- B. Cu
- C. Zn
- D. Diamond
Explanation
Iron is a metal with a hardness ranging from 4 to 5 on the Mohs scale, depending on its purity and crystal structure. Beryllium, on the other hand, has a hardness of about 5.5 to 6 on the Mohs scale. Therefore, beryllium is approximately as hard as iron.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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