![jlayne0605](/avatars/16536.jpg)
jlayne0605
22.01.2021 •
Chemistry
What is the purpose of having different models of atom
Solved
Show answers
More tips
- W Work and Career How to behave at an interview? Tips from an HR specialist...
- F Family and Home How to Keep Your Home Warm: Tips and Tricks...
- D Dating, Love, Relationships Does a Person s Character Depend on the Color of Their Eyes?...
- O Other Childhood Fears: What Many of Us Experienced...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
Answers on questions: Chemistry
- C Chemistry Why does crash affect the motion of the objects?...
- C Chemistry Which set of the below elements are in the same period....
- C Chemistry PLEASE HELP ASAP Which statement best describes how the phase of the Moon changes from a full moon to a new moon? A. Earth moves around the Sun until Earth is between the Sun and...
- C Chemistry Explain how ocean currents affect climate...
- C Chemistry A 10.0 g sample of a hydrate was heated until all the water was driven off. The mass of the anhydrous product remaining was 8.00 grams. What is the percent of water in the hydrate?...
- C Chemistry Hi have free points and a good day can u be my friend is yes tap on my name...
- C Chemistry Write balanced chemical equations showing the reactions. Make sure to accurately write the formula and then balance the equation. Potassium metal reacts with water to produce hydrogen...
- M Mathematics Can someone like help me with three more questions this is confusing...
- S Social Studies In a paragraph explain the role the Green Mountain Boys played in preparing the colonists for fighting against the British?...
- M Mathematics Hello can someone help me with this .. !...
Ответ:
Thomson's model of atom was similar to a Christmas pudding. The electrons are scattered like currants in a sphere of positive charge that is the spherical Christmas pudding.
Watermelon is also a good example of the model of atom.Here positive charge is spread like the red part of watermelon while electrons are like the seeds that are studded to it.
Postulates :
1) Electrons are embedded in the sphere of positive charge.
2) The negative charge and positive charge cancel each other. Hence, the atom is neutral.
3) Mass of atom is due to electrons.
Limitations :
1)But Thomson's model could not explain the observations made by other scientists like Rutherford's who found out that there is a nucleus in a atom but Thomson's model didn't have any nucleus.
2) It didn't have any experimental support, Thomson just proposed the model.
RUTHERFORD'S MODEL OF ATOM
Rutherford's model of atom was similar to the solar system.The planets revolve around the Sun. Similarly, the electrons revolve around the nucleus. He called these electrons planetary electrons.
Postulates :
1) There is a positively charged,highly densed center in an atom, called nucleus.Almost, the whole mass of atom resides in the nucleus.
2) The electrons revolve around the nucleus in an arbitary manner.
3) The size of a nucleus is very small as compared to atom.A nucleus can be compared with a cricket ball in a cricket stadium which is the atom.
Limitations :
1) Any charged particle is expected to radiate energy when accelerated.To remain in the orbit the electron has to undergo acceleration,so it would radiate energy.
The electron after radiating energy will finally collapse into the nucleus.If this happens then matter would not exist;but matter exists so atoms are stable.
Ответ:
12.5%
Step-by-step explanation:
sold for = 540
gain = 60
cost= 540-60= 480
gain%= 60/480*100%= 12.5%