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For the element X, student Surbhi measur...

For the element X, student Surbhi measured its radius as `102 nm`, Mr. Gupta as 113 nm and Mr. Agarwal as `100 nm` using same apparatus. Their teacher explained that measurements were correct by saying that recorded values by three students were

A

Crystal, vander Waal and covalent radii

B

Covalent, crystal and vander Wall radii

C

Vander Wall, ionic and covalent

D

None is correct

Text Solution

Verified by Experts

The correct Answer is:
A
Order of radius is -Vander Wall's radius `gt` Metallic radius `gt` Covalent radius
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Knowledge Check

  • The following 'precautions' were listed by a student in the experiment on study of 'Dependence of current on potential difference'. (A) Use copper wires as thin as possible for making connections. (B) All the connections should be kept tight. (C) The positive and negative terminals of the voltmeter and the ammeter should be correctly connected. (D) The 'zero error' in the ammeter and the voltmeter should be noted and taken into consideration while recording the measurements. (E) The 'key' in the circuit, once plugged in, should not be taken out till all the observations have been completed. The 'precautions' that need to be corrected and revised are :

    A
    (A), (C) and (E)
    B
    (C) and (E)
    C
    (B) and (E)
    D
    (A) and (E)

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    A
    Phrasal
    B
    Biographer
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    Verbatins
    D
    Linguist

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    Phrasal
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    Verbatins
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