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Choose the elements with electropositive...

Choose the elements with electropositive and electronegative valency.

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Elements C and D have electropositive valency and elements A and B have electronegative valency
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S CHAND IIT JEE FOUNDATION-ATOMIC STRUCTURE-QUESTION BANK-20
  1. The force of attraction which holds the different particles together i...

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  2. Choose the elements with electropositive and electronegative valency.

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  3. Who was the first Indian philosopher who had postulated that matter is...

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  4. What is atomic mass unit (amu)?

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  5. What do you understand by atomic mass of an element?

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  6. Two types of atoms of chlorine have atomic masses 35 and 37, then why ...

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  7. What is the difference between mass number and atomic mass?

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  8. Discovery Of Neutrons is by ?

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  9. How was the stability of atom explained by Bohr's model?

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  10. Why is atomic number always calculated from the number of protons in t...

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  11. Atomic number of chlorine is 17. What will be the atomic number of chl...

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  12. Atomic number of sodium is 11. What will be the atomic number of sodiu...

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  13. What are the postulates of Bohr's model of atom? How does Bohr model o...

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  14. Why are atomic masses of most of the elements fractional and not whole...

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  15. Why does helium exist as He whereas hydrogen exists as H2

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  16. Name the three isotopes of hydrogen. How do they differ from each othe...

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  17. M-shell can have up to 18 electrons, then why does potassium (Atomic n...

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  18. What are the different isotopes of oxygen? Write their symbols and dra...

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  19. As we move away from the nucleus, in atom the potential energy of elec...

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  20. Could a nucleus of more than one proton but no neutrons exist? Explain...

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