Questions and Answers
Sodium and Magnesium are noble gases.
False
Sodium has a higher atomic number than Magnesium.
False
Sodium and Magnesium belong to period 4 of the periodic table.
False
The atomic symbol for Sodium is Mg.
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Sodium has a lower atomic mass than Magnesium.
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What is the total distance covered by the athlete from the starting point to the point 90m up the hill and back to the starting point?
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What is the ratio of the athlete's speed when running up the hill to their speed when running back down the hill?
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How long does it take the athlete to run the 90m up the hill?
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What is the total time taken by the athlete to cover the entire distance?
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If the athlete maintains their speed when running back down the hill, how far would they travel in 20s?
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Study Notes
Incorrect Statements
- Sodium and Magnesium are not noble gases. Noble gases are a group of elements in the periodic table that are unreactive and include elements such as Helium, Neon, and Argon.
- The atomic symbol for Sodium is not Mg, it is Na.
- Sodium has a higher atomic mass than Magnesium, not lower.
Correct Statements
- Sodium has a higher atomic number than Magnesium.
- Sodium and Magnesium belong to different periods in the periodic table, not period 4. Sodium is in period 3 and Magnesium is in period 3 as well.
Athlete's Motion
- The athlete runs from the starting point up a hill at a constant speed of 3m/s.
- The athlete covers a distance of 90m while running up the hill.
- The athlete immediately changes direction and runs back along the same path to the starting point.
- The athlete moves with a constant speed of 6m/s while running back down the hill.
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Description
Test your knowledge of Sodium and Magnesium properties, including their atomic numbers, masses, and positions in the periodic table.
