LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
1.2k views
in Chemistry by (55.4k points)
closed by

(a) Why is Thomson’s model of an atom compared with watermelon? 

(b) Why do isotopes have different mass numbers?

1 Answer

+1 vote
by (51.9k points)
selected by
 
Best answer

a. According to Thomson’s model of the atom, the atom is a sphere of positive charge with negatively charged electrons embedded in it. It is compared with a watermelon because the sphere of positive charge represents the red, edible part of watermelon whereas electrons embedded in a positively charged sphere represent the black seeds.

b. Isotopes of an element differ in the number of neutrons in the nuclei so they have a different mass number as the mass number is the sum of a number of protons and neutrons in the nucleus.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...