A gas that reacts with CaO and not with NaHCO3 is:
Correct answer: B. CI2
- A. None of these
- B. CI2
- C. O2
- D. N2
- E. Na
Explanation
Chlorine gas does react with calcium oxide (CaO) to form calcium chloride (CaCl2):Cl2 + CaO → CaCl2But it doesnot react with NaHCO3
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About Periodic Properties and Trends
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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