You have studied in the previous class about sub-atomic particles like negatively charged electrons, positively charged protons and electrically neutral neutrons.>
• How do these sub-atomic particles coexist in an electrically neutral atom?You have acquired some fundamental ideas about atomic models suggested by J J Thomson, Ernest Rutherford and Niels Bohr which have been presented in Class 9.
On the basis of your previous knowledge can you prepare a model of an atom?
• Can you arrange the sub-atomic particles in any other way in an atom?(Take the help of your friends, your teacher and the Internet). Observe your atomic model and the models of your friends carefully and try to answer the questions.
• Do all atoms have the same sub-atomic particles?To answer the above questions, we need to understand the nature of light, coloured flames and their characteristics.