Question

MATCH THE ENTRIES OF COLUMN A WITH APPROPRIATE ENTRIES OF COLUMN B:
Column
B
Column A
1. Isotopes
2. Isobars
3. Atomic number
4. Mass number
(a) Number of protons
(b) Canal rays
(c) Number of protons + neutrons
(c) 160 and 180
(e) Nuclear model of an atom
(Discovery of radioactivity
(9) Discovery of neutrons
(h) Discovery of cathode rays
5. J.J. Thomson
6. Chadwick
7. Rutherford
8. Henry Becquerel
9. John Dalton
(0)
40
20
Ca and 10K
10. Anode Rays
() Atomic theory
ASE HELP SANJAM TO ENCIRCLE THE METALLIC ELEMENTS :​

Answer 1

MY DEAR FRIEND

BUT WE CANNOT FIND COLUMN B FOR THE QUESTION TO MATCH

THANK YOU