Decide which element probably has a melting point most and least similar to the melting point of calcium.
Question
Decide which element probably has a melting point most and least similar to the melting point of calcium.
Solution
To determine which element has a melting point most and least similar to that of calcium, we recall that the melting point of calcium (Ca) is approximately 842 °C.
We then compare calcium's melting point with known melting points of various elements, particularly focusing on elements in the same group or nearby in the periodic table, as they typically have more similar properties.
Most Similar Element
- Strontium (Sr): The melting point of strontium is approximately 777 °C, which is relatively close to that of calcium.
Least Similar Element
-
Aluminum (Al): The melting point of aluminum is about 660 °C, but there are many other metals with significantly different melting points like:
-
Gold (Au): The melting point of gold is about 1064 °C, which is notably higher than that of calcium.
Final Answer
- Most Similar Element: Strontium (Sr) - Approx. 777 °C
- Least Similar Element: Gold (Au) - Approx. 1064 °C
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