Author Question: Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though ... (Read 50 times)

jho37

  • Hero Member
  • *****
  • Posts: 531
Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though they are three of the five simplest elements, why are they rare compared to many heavier elements?
 
  What will be an ideal response?

Question 2

Do you think it is possible that a 1.5-solar-mass red giant could harbor an advanced civilization? Explain your reasoning.
 
  What will be an ideal response?



kswal303

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

Helium fuses into carbon by combining three helium nuclei (atomic number

Answer to Question 2

A 1.5-solar-mass red giant is a temporary stage of life for a low-mass star. If an advanced civilization had already developed around this star, which is possible, then it may have had the resources to respond to its expanding, cooling, and brightening star.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

For a complete list of videos, visit our video library