This topic contains a solution. Click here to go to the answer

Author Question: How many valence electrons are in silicon? A) 2 B) 4 C) 5 D) ... (Read 38 times)

LCritchfi

  • Hero Member
  • *****
  • Posts: 519
How many valence electrons are in silicon?
 
  A) 2
  B) 4
  C) 5
  D) 7

Question 2

What is the source of atmospheric pressure?
 
  A) It is the weight of the air above that is pushing down on us.
  B) It is the interatomic attraction between air molecules.
  C) It is the potential energy stored in the gas molecules.
  D) It is the stored solar energy in gas molecules.
  E) none of the above



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

perkiness

  • Sr. Member
  • ****
  • Posts: 348
Answer to Question 1

B

Answer to Question 2

A



LCritchfi

  • Hero Member
  • *****
  • Posts: 519

perkiness

  • Sr. Member
  • ****
  • Posts: 348
Always glad to help...



 

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

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.

For a complete list of videos, visit our video library