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The number of electrons in an atom of at...

The number of electrons in an atom of atomic number Z and mass number A is

A

zero

B

Z

C

A-Z

D

A

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The correct Answer is:
B
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NIKITA PUBLICATION-ATOMS, MOLECULES AND NUCLEI-MCQs
  1. Nuclei of the isotopes have the same number of

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  2. Which one of the following has the identical property for isotopes?

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  3. The number of electrons in an atom of atomic number Z and mass number ...

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  4. The number of protons in an atom of atomic number Z and mass number A ...

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  5. The number of nucleons in an atom of atomic number Z and mass number A...

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  6. When the mass equal to 1 a.m.u. is converted into energy, the energy p...

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  7. In a nuclear reaction, which of the following is conserved?

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  8. A pair of isotopes is

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  9. Mass energy equation was propounded by

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  10. The mass of an atomic nucleus is less than the sum of the masses of it...

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  11. According to Einsteins theory of relativity, mass of an object moving ...

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  12. According to Einstein, the relation between mass and energy is given b...

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  13. Which of the following statement is not true regarding einsteins mass ...

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  14. In nuclear reactions, we have the conservation of

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  15. The energy equivalent to 1 a.m.u. is equal to the energy which an elec...

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  16. The mass of an electron at rest is 9.1 xx10^(-31) kg. the mass of an e...

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  17. The effective mass of photon of frequency 5xx10^(14) Hz is

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  18. The rest mass of a proton is 1.67xx10^(-27) kg Its total energy when i...

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  19. If a particle moves with a speed of 1.5 xx 10^(8) m/s then the ratio o...

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  20. The velocity of a particle at which the kinetic energy is equal to its...

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