The ionic bonds within cesium chloride, CsCl, are much weaker than the ionic bonds within sodium chloride, NaCl. Use what you know about the periodic table to explain why this is so
What will be an ideal response?
From the periodic table we find that the cesium ion is larger than the sodium ion. The distance between the cesium ion and the chloride ion in cesium chloride is greater than the distance between the sodium ion and the chloride ion in sodium chloride. Since electric attractions diminish over distance the cesium chloride ionic bond is weaker.
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A. 10 m/s B. 15 m/s C. 20 m/s D. 30 m/s E. 150 m/s
According to the Koeppen system, an A climate is one in which
A) potential evaporation exceeds precipitation.
B) the average temperature for all months is greater than 18 degrees C.
C) the coldest month of the year has an average temperature higher than -3 degrees C, but below 18 degrees C.
D) all months have mean temperatures below 10 degrees C.
Mount _______________ is a dangerous volcano in Italy that has a long history of threatening populations
Fill in the blank with correct word.
What happens to the porosity of a material as it becomes more compacted?
A. The porosity increases. B. The porosity does not change. C. The porosity decreases.