Discussion
Home ‣ General Knowledge ‣ Chemistry See What Others Are Saying!
- Question
How does molecular shape affect polarity?
- Correct Answer
- Polarity :: The polarity of a molecule defines its other physical properties such as melting point, boiling point, surface tension, vapor pressure etc Simply, polarity occurs when the electron distribution in a molecule is asymmetric This results in a net dipole moment in the molecule One end of the molecule is charged negative while the other gets a positive charge The polarization of a molecule greatly depends on the shape of the molecule A diatomic molecule like HF mentioned above has no issue of shape The net dipole moment is only due to the uneven distribution of electrons between the two atoms However, when there are more than two atoms involved in making a bond, there are many complexities The water molecule is of bent shape Therefore, when the two pair of electrons shared by oxygen with two hydrogen atoms is pulled towards oxygen, the net dipole moment results in the direction of the oxygen atom There is no other force to cancel out the resultant dipole moment Hence, the water molecule is highly polar Ammonia molecule is of a pyramid shape and the electronegative N atom pulls the electrons towards itself The three N-H bonds are not in the same plane; hence the dipole moments created do not get canceled out This makes ammonia a polar molecule However, the dipole moments sometimes get canceled due to the shape of the molecules, making the molecule non-polar Carbon dioxide is such a molecule
- 1. When was the first elevator built?
Options- A. 1743
- B. 1739
- C. 1760
- D. 1785 Discuss
- 2. The hardest form of carbon is
Options- A. coke
- B. graphite
- C. diamond
- D. charcoal Discuss
- 3. The mica belt of the Himalayas, the major part of it is situated in
Options- A. Andhra Pradesh
- B. Bihar
- C. Rajasthan
- D. West Bengal Discuss
- 4. The first 'Financial Service Park' for industry being set up at
Options- A. Guragaon
- B. Surat
- C. Bangalore
- D. Pune Discuss
- 5. http://www.CuriousTab.com - is an example of what?
Options- A. A URL
- B. An access code
- C. A directory
- D. A server Discuss
- 6. First human heart transplant operation conducted by Dr. Christiaan Barnard on Louis Washkansky, was conducted in
Options- A. 1967
- B. 1968
- C. 1958
- D. 1922 Discuss
- 7. The working language(s) of the UNESCO is/are
Options- A. French only
- B. English only
- C. English and French
- D. English, French and Russian Discuss
- 8. Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
Options- A. Golf tee
- B. Motorboat
- C. Water skis
- D. Hang glider Discuss
- 9. Rahul Dravid also made Test debut along with Sourav Ganguly in the same match.He scored 95 runs. How many fours did he hit in that innings of 95 runs?
Options- A. 6
- B. 10
- C. 5
- D. 7 Discuss
- 10. The smallest glaciers are
Options- A. mountain or alpine glaciers
- B. continental glaciers
- C. piedmont glaciers
- D. None of the above Discuss
More questions
Correct Answer: 1743
Explanation:
The first elevator was built in the palace of King Louis XV. It only traveled up one floor, and was hand powered by men inside the chimney.
Correct Answer: diamond
Correct Answer: Bihar
Correct Answer: Guragaon
Correct Answer: A URL
Explanation:
A URL (Uniform {or Universal} Resource Locator) is an address for a specific document found on the Web. It is made up of several components: a domain name, the directories and subdirectories of the site, and the extension. To learn about these parts of a URL, visit the Evaluating Web Sites tutorial.
Correct Answer: 1967
Explanation:
Louis Washkansky (1913 - 21 December 1967) was the recipient of the world's first human heart transplant.
Washkansky died of double pneumonia eighteen days after the transplant because of a weakened immune system.
Correct Answer: English and French
Correct Answer: Water skis
Explanation:
The new item was first used on Lake Pepin in Minnesota.
Correct Answer: 6
Explanation:
The match was drawn.
Correct Answer: mountain or alpine glaciers
Comments
There are no comments.More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.