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Assertion(A): All isotopes of a given el...

Assertion(A): All isotopes of a given element show the same type of chemical behaviour.
Reason(R) The chemical properties of an atom are controlled by the numb er of electron s in the atom.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is not the correct explanation of A

C

A is true but R is false

D

Both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
All isotopes of any element have same atomic number and hence same number of protons and electrons. As electrons take part in a chemical reaction, atoms having same having same number of electrons show same type of chemical behaviour
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Knowledge Check

  • This section contains Assertion (a) and Reasons (R) type questins. Each questin has 4 choices (1), (2), (3) and (4), out of which only one is correct. (1) Bothe Assertion and Reason are correct and Reason is the correct explanation of the Assertion (2) Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion (3) Assertion is correct but Reason is incorrect (4) Both Assertion and Reason are incorrect Assertion(A) All isotopes of a given element show the same type of chemical behaviour. Reason(R) The chemical properties of an atom are controlled by the number of electrons in the atom.

    A
    Both assertion and reason are correct and reason is the correct explanation of the assertion
    B
    Both assertion and reason are correct but reason is not the correct explantion
    C
    Assertion is correct but reason is incorrect
    D
    Both assertion and reason are incorrect

  • Assertion. All isotopes of a given element show the same type of chemical behaviour Reason. The chemical properties of an atom are controlled by the number of electrons in an atom.

    A
    If both assertion and reason are true, and reason is the true explanation of the arrertion
    B
    If both assertion and reason are true, but reason is not the true explanation of the assertional
    C
    If assertion is true, but reason is false
    D
    If both assertion and reason are false

  • Assertion : All the isotopes of a given element show same chemical behaviour. Reason : Isotopes have different number of neutrons present in the nucleus.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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    (a) why are the chemical properties of the isotopes same? (b) Draw bohr model helium atom.

    Isotopes of an element have : (a) the same physical properties (b) different chemical properties (c) different number of neutrons (d) different atomic numbers

    Does an atom of an element show all the properties of the element ?

    Assertion: The chemical properties of different isotope are same. Reason: Isotopes having same number of neutron.

    Assertion (A): In triad, the three elements have same gaps of atomic masses. ,br> Reason (R): Elements in a triad have similar properties.

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