SELECT * FROM question_mgmt as q WHERE id=4014 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=183 and ex_no='8' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Structure of the Atom compare all the proposed models of an atom given i

Question:

Compare all the proposed models of an atom given in this chapter.

Answer:

Thomson's model : A molecule comprises of an emphatically accused circle of electrons installed in it.
Rutherford's model : An atom comprises of a decidedly charged molecule assembled at the middle known as the nucleus. The size of nucleus exceptionally little when contrasted with the size of the atom. The electron spin around the nucleus in clear cut circles.
Bohr's model : There are just sure circles known as discrete circles inside the atom in which electrons rotate around the nucleus. Electrons don't emanate energy while rotating.


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