Tincal is a mineral of___________________?
Correct answer: C. B
- A. A1
- B. Si
- C. B
- D. C
Explanation
Tincal is the naturally occurring mineral form of borax, hydrated sodium tetraborate, so it is a mineral of boron. The likely mistake is choosing silicon because both boron and silicon occur in hard, mineral-like compounds, but tincal is specifically a borate mineral.
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Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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