Periodic Classification Of Elements - One Mark Questions

11th Standard

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Chemistry

Time : 00:30:00 Hrs
Total Marks : 15
    15 x 1 = 15
  1. What would be the IUPAC name for an element with atomic number 222?

    (a)

    bibibiium

    (b)

    bididium

    (c)

    didibium

    (d)

    bibibium

  2. The group of elements in which the differentiating electron enters the anti penultimate shell of atoms are called

    (a)

    p-block elements

    (b)

    d-block elements

    (c)

    s-block elements

    (d)

    f-block elements

  3. Period of an element is represented by _____ quantum number

    (a)

    Principal

    (b)

    Azimuthal

    (c)

    Magnetic

    (d)

    Spin

  4. The first list of 23 chemical elements was published by _____ in the year 1789.

    (a)

    Berzelius

    (b)

    Dobereiner

    (c)

    Lavoisier

    (d)

    John Dalton

  5. Law of triad was unable to explain for the element

    (a)

    Ca, Sr and Ba

    (b)

    Fe, Co, Ni

    (c)

    Li, Na, K

    (d)

    CI, Br, I

  6. Law of octaves was proposed by _____

    (a)

    Lothar Meyer

    (b)

    Johann Dobereiner

    (c)

    Newland

    (d)

    Mendeleev

  7. ______ proposed modern periodic law.

    (a)

    Henry Moseley

    (b)

    Mendeleev

    (c)

    Newland

    (d)

    Dobrainer

  8. The atomic weight of Au is ______

    (a)

    195

    (b)

    197

    (c)

    198

    (d)

    196

  9. The number of groups in the periodic table

    (a)

    7

    (b)

    18

    (c)

    5

    (d)

    6

  10. The element with atomic number 57 belongs to _____

    (a)

    s-block

    (b)

    p-block

    (c)

    d-block

    (d)

    f-block

  11. Lithium shows diagonal relationship with _____

    (a)

    Mg

    (b)

    Al

    (c)

    Na

    (d)

    Si

  12. The electronic configuration of nitrogen is _____

    (a)

    Is22s22p3

    (b)

    Is22s2 2Px12py12P21

    (c)

    Is22s12p4

    (d)

    both (a) and (b)

  13. In the third period the first ionization potential is of the order.

    (a)

    Na > Al > Mg > Si > P

    (b)

    Na < Al < Mg < Si < P

    (c)

    Mg > Na > Si > P > Al

    (d)

    Na< Al < Mg < Si < P

  14. The correct order of decreasing electronegativity values among the elements X, Y, Z and A with atomic numbers 4, 8, 7 and 12 respectively

    (a)

    Y > Z > X > A

    (b)

    Z > A > Y > X

    (c)

    X > Y > Z > A

    (d)

    X > Y > A > Z

  15. Which of the following orders of ionic radii is correct?

    (a)

    H- > H+ > H

    (b)

    Na+ > F- > O2-

    (c)

    F > O2- > Na+

    (d)

    None of these

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