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Discuss the position of d-block elements...

Discuss the position of d-block elements, lanthanoids and actinoids in the periodic table.

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In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table The last element of the p-block in 6th period is represented by the outermost electronic configuration

In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table Which of the element whose atomic numbers are given below, cannot be accommodated in the present set up of the long form of the periodic table ?

Knowledge Check

  • All the lanthanoids and actinoids belong to period of

    A
    5th and 6th respectively
    B
    6th and 7th respectively
    C
    5th and 7th respectively
    D
    either (1)(2)

  • d-block elements belong to __________periods of the periodic table.

    A
    `3 - 6`
    B
    `3 - 7`
    C
    `4 - 7`
    D
    `2 - 6`

  • In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending uponthe type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, s,p,d, and f. the modern periodic table consists of 7 periods and 18 groups. each period begins with the filling of a new energy shell. in accordance with the aufbau principle, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. the seventh period is still incomplete. to avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids are placed at the bottom of the maini body of the periodic table. Q. Which of the elements whose atomic numbers are given are given below, cannot be accomodated in the present set up of the long form of the periodic table?

    A
    107
    B
    118
    C
    126
    D
    102

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    In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table The electronic configuration of the element which is just above the element with atomic number 43 in the same group is

    In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table The element with atomic number 57 belongs to

    In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table The elements with atomic numbers 35,53 and 85 are all

    In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending uponthe type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, s,p,d, and f. the modern periodic table consists of 7 periods and 18 groups. each period begins with the filling of a new energy shell. in accordance with the aufbau principle, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. the seventh period is still incomplete. to avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids are placed at the bottom of the maini body of the periodic table. Q. The element with atomic number 57 belongs to:

    Comprehension given below is followed by some multiple choice questions. Each question has one correct option. Choose the correct option. In the modern periodic table elements are arranged in order of increasing atomic numbers which is related to the electronic configuration . Depending upon the type of orbitals receiving the last electron the elements in the periodic table have been divided into four blocks viz, s, p, d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell . In accordance with the aufbau principle, the seven periods (1 to 7) have 2,8,8 ,18,18, 32 and 32 elements respectively . To avoid the periodic table being too long the series of f-block elements called lanthanoids and actinoids are placed at the bottom of the main body of the periodic table.

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