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D and F Block Elements question

2020 · 4 Sep · Shift 1 · Q3
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D and F Block Elements question

2020 · 4 Sep · Shift 1 · Q3

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
The elements with atomic numbers 101 and 104 belong to, respectively :
  1. A
    Group 6 and Actinoids
  2. B
    Actinoids and Group 4
  3. C
    Group 11 and Group 4
  4. D
    Actinoids and Group 6
View written solutionFree

Correct answer: B

  1. Identify the element with atomic number 101

    Atomic number 101101101 corresponds to Mendelevium (Md).

    • Mendelevium is a member of the actinoid series.
    • The actinoids include elements with atomic numbers from 898989 to 103103103.

    Hence, element 101101101 belongs to Actinoids.

  2. Identify the element with atomic number 104

    Atomic number 104104104 corresponds to Rutherfordium (Rf).

    Its electronic configuration is based on the 6d6d6d series, and it is placed in Group 4 of the periodic table.

    Hence, element 104104104 belongs to Group 4.

  3. Match with the given options

    • For Z=101Z=101Z=101: Actinoids
    • For Z=104Z=104Z=104: Group 4

    Therefore, the correct option is:

    B: Actinoids and Group 4

  4. Verification with stored answer

    Stored correct answer is B, which matches our derived answer.

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