Match the following.
`{:("a) Plum pudding or ",),(" watermelon",),(" model of atom","1) Goldstein"),("b) Proton","2) J.J. Thomson"),("c) Sodium","3) 2, 8, 1"):}`

Match the following. {:("a) Proton","1) "e^(-)),("b) Electron","2) "n^(0)),("c) Neutron","3) "p^(+)):}

{:(1. "Discovered the cathode rays " , (a) "E. Goldstein"), ( 2. "Discovered the protons", (b) "J.J. Thomson" ), (3. "Discovered the neutrons ", (c ) "William Crookes") , (4. "Plum pudding model",(d) "Lord Rutherford" ) , ( 5. "Planetary model of an atom ", (e ) "James Chadwick"):}

Match List I with List II and select the correct answer using the code given below the Lists : {:(" ""List I"," ""List II"),("Scientist","Discovery"),("Goldstein",1."Atomic theory"),("Chadwick",2."Proton"),("JJ Thomson",3."Neutron"),("John Dalton",4."Electron"):}

Atomic Structure||J.J. Thomson's Plum Pudding Model||Rutherford Model

Match the following : {:(,A,,B),((1),K,(a),2.8.1),((2),L,(b),2),((3),M,(c ),2","8.8),((4),"Sodium",(d),18),((5),"Atgon",(e ),8):}

Complete the following sentences : (a) 1J= …………ealorie . (b) 1 kWh ………….J

J.J.Thomson proposed his atom model in 1898. c) What is the limitation of Thomson's atom model?

Atoms of elements are made up mainly of protons, electrons and neutrons. a) Which of these particles are present in the nucleus of atoms? b) The discovery of which particle is related to the scientist .J. J. Thomson? c) Name the positively. charged particles? d) Name the scientist who proved that most of. the mass of an atom is concentrated in the nucleus?