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7th Standard English Medium Science Subject T1 - Atomic Structure Book Back 3 Mark Questions with Solution Part - I

7th Standard English Medium Science Subject T1 - Atomic Structure Book Back 3 Mark Questions with Solution Part - I

7th Standard

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Science

Time : 00:30:00 Hrs
Total Marks : 15
    5 x 3 = 15

  1. Distinguish Isotopes from Isobar.

  2. What are isotones? Give one example.

  3. Differentiate mass number from atomic number.

  4. The atomic number of an element is 9. It has 10 neutrons. Find the element from the periodic table. What will be its mass number?

  5. An atom of an element has no electron, will that atom have any mass or not? Can an atom exist without electron? If so then give example.

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