Home
Class 11
CHEMISTRY
Assertion : All the isotopes of a given ...

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.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason about isotopes, let's break it down step by step. ### Step 1: Understand the Assertion The assertion states that "All the isotopes of a given element show the same chemical behaviour." - **Explanation**: Isotopes are atoms of the same element that have the same number of protons (and hence the same atomic number) but different numbers of neutrons. This means they have the same electronic configuration, which is responsible for chemical behaviour. Therefore, the assertion is true. ### Step 2: Understand the Reason The reason states that "Isotopes have different numbers of neutrons present in the nucleus." - **Explanation**: This statement is also true. Isotopes differ in the number of neutrons, which affects their mass but not their chemical properties. The presence of different neutrons does not change the electronic configuration of the element, thus supporting the assertion. ### Step 3: Analyze the Relationship Now, we need to determine if the reason provided correctly explains the assertion. - **Explanation**: While both the assertion and the reason are true, the reason does not explain why isotopes have the same chemical behaviour. The reason simply states a fact about isotopes (the difference in neutrons), but it does not clarify why this leads to the same chemical behaviour. ### Conclusion Based on the analysis: - The assertion is true. - The reason is true but does not explain the assertion. Thus, the correct answer is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion. ### Final Answer The correct option is: Both assertion and reason are true, but the reason is not the correct explanation of the assertion. ---
To solve the question regarding the assertion and reason about isotopes, let's break it down step by step. ### Step 1: Understand the Assertion The assertion states that "All the isotopes of a given element show the same chemical behaviour." - **Explanation**: Isotopes are atoms of the same element that have the same number of protons (and hence the same atomic number) but different numbers of neutrons. This means they have the same electronic configuration, which is responsible for chemical behaviour. Therefore, the assertion is true. ### Step 2: Understand the Reason ...
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    NCERT FINGERTIPS ENGLISH|Exercise Discovery Of Sub-Atomic Particles|5 Videos

  • STRUCTURE OF ATOM

    NCERT FINGERTIPS ENGLISH|Exercise Atomic Models|5 Videos

  • STRUCTURE OF ATOM

    NCERT FINGERTIPS ENGLISH|Exercise NCERT EXEMPLAR PROBLEMS|16 Videos

  • STATES OF MATTER

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

  • THE P-BLOCK ELEMENTS

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

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.

Assertion : All the three isotope of hydrogen have almost the same chemical properties. Reason : Isotopes differ from one another in respect of the presence of neutrons.

Isotopes of an element differ in the number of ………in their nuclei

Isotopes of an element differ in the number of ………in their nuclei

A : Isotopes of an element have almost similar chemical properties R : isotopes have same electron configuration .

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

Isotopes have same number of atomic mass

The atoms of same element having same chemical properties but different masses are called

Assertion: Melting points of isomeric dihalobenzenes are nearly the same. Reason: Isomeric dihalobenzenes have different molecular masses.

Name the following: Two atoms having the same number of protons and electrons but different number of neutrons.