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With reference to Helium, consider the following statements:
1. It is the lightest element on the Earth.
2. It is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure.
2. It is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
With reference to Helium, consider the following statements:1. It is t...
In News: The US is planning to cut off the export of helium from 2021 and the Indian industry stands to lose out heavily.
Statement 1 is not correct. Helium (He) is a chemical element, inert gas of Group 18 (noble gases) of the periodic table. It is the second lightest element after hydrogen.
Statement 2 is correct. Helium is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure and it is necessary to apply pressure of 25 atmospheres at a temperature of 1 K (−272 °C, or −458 °F) to convert it to its solid form.
Statement 1 is not correct. Helium (He) is a chemical element, inert gas of Group 18 (noble gases) of the periodic table. It is the second lightest element after hydrogen.
Statement 2 is correct. Helium is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure and it is necessary to apply pressure of 25 atmospheres at a temperature of 1 K (−272 °C, or −458 °F) to convert it to its solid form.
Most Upvoted Answer
With reference to Helium, consider the following statements:1. It is t...
Statement 1: Helium is the lightest element on Earth.
This statement is incorrect. While helium is indeed a very light element, it is not the lightest element on Earth. Hydrogen is actually the lightest element, with a lower atomic mass than helium. Hydrogen has an atomic mass of 1, while helium has an atomic mass of 4.
Statement 2: Helium is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure.
This statement is correct. Helium is known for its extremely low boiling point, which is close to absolute zero (-268.93 degrees Celsius or -452 degrees Fahrenheit). At this temperature, helium exists in a liquid state. However, cooling helium further does not result in its solidification at normal atmospheric pressure. Instead, it undergoes a phase transition known as superfluidity, where it exhibits unique properties such as zero viscosity and the ability to flow up and over the walls of containers. To solidify helium, it requires extremely high pressures, around 25 atmospheres, along with temperatures close to absolute zero.
Conclusion:
In conclusion, statement 1 is incorrect as hydrogen is the lightest element on Earth, not helium. Statement 2 is correct as helium cannot be solidified by sufficient cooling at normal atmospheric pressure.
This statement is incorrect. While helium is indeed a very light element, it is not the lightest element on Earth. Hydrogen is actually the lightest element, with a lower atomic mass than helium. Hydrogen has an atomic mass of 1, while helium has an atomic mass of 4.
Statement 2: Helium is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure.
This statement is correct. Helium is known for its extremely low boiling point, which is close to absolute zero (-268.93 degrees Celsius or -452 degrees Fahrenheit). At this temperature, helium exists in a liquid state. However, cooling helium further does not result in its solidification at normal atmospheric pressure. Instead, it undergoes a phase transition known as superfluidity, where it exhibits unique properties such as zero viscosity and the ability to flow up and over the walls of containers. To solidify helium, it requires extremely high pressures, around 25 atmospheres, along with temperatures close to absolute zero.
Conclusion:
In conclusion, statement 1 is incorrect as hydrogen is the lightest element on Earth, not helium. Statement 2 is correct as helium cannot be solidified by sufficient cooling at normal atmospheric pressure.
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With reference to Helium, consider the following statements:1. It is the lightest element on the Earth.2. It is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?
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