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Elements of the same mass number but of ...

Elements of the same mass number but of different atomic number are known as ……….

A

isobars

B

isomers

C

isotones

D

isotopes

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The correct Answer is:
A
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Elements of the same number but of different atomic number are known as ……….

The atoms of different elements having same mass number but different atomic number are known as isobars. The sum of protons and neutrons, in the isobars is always different.

The atoms with same mass number but different atomic number are called

Assertion (A): Two atoms of different elements having same mass number but different atomic numbers are called isobars. Reason (R): Atomic number is the number of protons present and mass number is the total number of protons and neutrons present in a nucleus.

Assertion : Isobars are the element having same mass number but different atomic number. Reason : Neutrons and protons are present inside nucleus

Which of the following pairs is/are correctly matched ? 1. Isotopes : Atoms with same atomic number but different atomic mass 2. Isobars : Atoms with same number of neutrons but different atomic number 3. Isotones : Atoms with same mass number but different atomic number Select the correct answer using the code given below :

NIKITA PUBLICATION-ATOMS, MOLECULES AND NUCLEI-MCQs
  1. Atom with the same atomic number and different mass numbers are called...

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  2. Atoms of different elements having the same number of neutrons but dif...

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  3. Elements of the same mass number but of different atomic number are kn...

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  4. Nuclei of the isotopes have the same number of

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

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

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

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

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

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

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  11. A pair of isotopes is

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  12. Mass energy equation was propounded by

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

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

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

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

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  17. In nuclear reactions, we have the conservation of

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

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

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

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