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Atomic number of a metal having 12 neutr...

Atomic number of a metal having 12 neutrons and mass number 23 is __________ .

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The correct Answer is:
11
11
Atomic number = Mass number = number of neutrons Atomic number = 23 -12 =11
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PEARSON IIT JEE FOUNDATION-ATOMIC STRUCTURE AND TRANSFORMATION OF MATTER-CONCEPT APPLICATION Level -1
  1. Balackening of silverware is a change.

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  2. 2HOCl to2HCl+O(2) is a decomposition reaction.

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  3. Atomic number of a metal having 12 neutrons and mass number 23 is .

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  4. The nucleus consists of

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  5. The maximum number of electrons that can be accommodated in an orbit i...

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  6. Among the noble gases which gas does not have octet configuration?

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  7. Which among the following pairs of elements forms cation and anion res...

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  8. Which is a negative a radical among the following ?

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  9. Which among the following reactions is not balanced ?

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  10. Among the following reactions , identify the synthesis reaction.

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  11. Identify a useful change among the following chemical changes.

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  12. Which among the following is not a characteristic of a physical chang...

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  13. Among the following types of chemical reactions,application of metal r...

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  14. If a solid non-metal X forms oxide of type X(2)O(5),then the formula o...

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  15. If the formula of a metal nitrite is M(NO(2))(2.), then the formula of...

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  16. Identify the number of neutrons present in a pair of elements with ato...

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  17. Heating solid ammonium chloride involves change in the .

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  18. Which of the following is a chemical change ?

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  19. Arrange the following sequence in order to derive the formula of zine...

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