Periodic Classification Of Elements MCQ

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• The ionization potential of nitrogen is higher than that of oxygen due to . . . . . . . .
  ক

  Small size of nitrogen

  খ

  More attraction of electrons by nucleus

  গ

  Higher penetrating effect

  ঘ

  Additional stability of half-filled p-orbitals
• In the modern periodic table, the periods . . . . . . . . contains lanthanides and actinides.
  ক

  4 and 5

  খ

  5 and 6

  গ

  3 and 4

  ঘ

  6 and 7
• In the modern periodic table, where is the element of electronic configuration 2, 8, 1 placed?
  ক

  Group 3

  খ

  Group 11

  গ

  Period 1

  ঘ

  Group 1
• . . . . . . . . is the free energy, when an electron, is added to its neutral gaseous atom.
  ক

  Electronegativity

  খ

  Electropositivity

  গ

  Electron affinity

  ঘ

  Ionization energy
• Which element has atomic number 3?
  ক

  Boran

  খ

  Lithium

  গ

  Beryllium

  ঘ

  Sodium
• The correct increasing order of acidity of the oxide of Mn is -
  ক

  MnO 2 2O₇

  খ

  MnO₂ > MnO > Mn₂O₇

  গ

  Mn₂O₇ > MnO₂ > MnO

  ঘ

  MnO₂ > Mn₂O₇ > MnO
• Which of the following statements is/are false regarding modern periodic table?<br>1. Elements in the modern periodic table are arranged in decreasing order of their atomic numbers.<br>2. Elements in the modern periodic table are arranged in increasing order of their atomic masses.<br>3. In the modern periodic table, isotopes are placed in adjacent groups.<br>4. Elements in modern periodic table are arranged in increasing order of their atomic numbers.
  ক

  only 1

  খ

  only 4

  গ

  1, 2 and 4

  ঘ

  1, 2 and 3
• Elements in any common group are similar.
  ক

  Atomic size

  খ

  Number of valence electrons

  গ

  Atomic mass number

  ঘ

  Atomic number
• Who was the first scientist to make periodic table of elements?
  ক

  Henry Moseley

  খ

  Robert Boyle

  গ

  Mendeleev

  ঘ

  John Newlands
• Which of the following statements are correct?<br>1. There are 18 elements in the fourth and fifth period.<br>2. The seventh period is incomplete with 33 elements.<br>3. The sixth period has 32 elements.
  ক

  1 and 2

  খ

  2 and 3

  গ

  1, 2 and 3

  ঘ

  1 and 3
• The atomic number of actinium is-
  ক

  89

  খ

  90

  গ

  88

  ঘ

  91
• In the modern periodic table, in which period elements with atomic numbers 19 to 36 are placed?
  ক

  5

  খ

  3

  গ

  6

  ঘ

  4
• Which of the following states that "the properties of elements are the periodic function of their atomic numbers".
  ক

  Modern periodic law

  খ

  Dobereiner's Triads

  গ

  Newlands law of octav

  ঘ

  Mendeleev's periodic table
• . . . . . . . . is the most electrically negative element of the table.
  ক

  bromine

  খ

  chlorine

  গ

  iodine

  ঘ

  fluorine
• Which of the following is the largest size atom?
  ক

  Si

  খ

  S

  গ

  Al

  ঘ

  P
• Which of the following statements regarding the modern periodic table is correct?
  ক

  It consists of 18 vertical columns, which are called groups

  খ

  It consists of 7 horizontal rows, which are called groups

  গ

  It consists of 18 horizontal rows, which are called period

  ঘ

  It consists of 7 vertical column, called period
• Aluminium was named as . . . . . . . . metal in the modern periodic table.
  ক

  Scandium

  খ

  Gallium

  গ

  Germanium

  ঘ

  Aluminium
• The electronic configuration of an element is 2, 8, 2. It is in the . . . . . . . . group in the modern periodic table.
  ক

  5^th

  খ

  8^th

  গ

  12^th

  ঘ

  2^nd
• In the modern periodic table, . . . . . . . . period does not include metals-
  ক

  2

  খ

  1

  গ

  4

  ঘ

  3
• In the modern periodic table, elements of the same group have the same number.
  ক

  atomic weight

  খ

  atomic radius

  গ

  atomic number

  ঘ

  valence electrons
• Lanthanides and Actinides?
  ক

  d-block element

  খ

  p-block element

  গ

  f-block element

  ঘ

  s-block element
• Elements like Li, Na and K . . . . . . . . are related to
  ক

  Alkaline soil group

  খ

  Halogen group

  গ

  Zero group

  ঘ

  Alkali metal group
• The elements of an F-block are called:
  ক

  Alkaline soil metals

  খ

  Transitive elements

  গ

  Internal transition elements

  ঘ

  alkaline metals
• Elements . . . . . . . . were placed in the periodic table of Newland with halogens.
  ক

  Mn and As

  খ

  Fe and Se

  গ

  Ce and La

  ঘ

  Co and Ni
• In which of the following groups of modern periodic table, noble gases are placed?
  ক

  15

  খ

  17

  গ

  16

  ঘ

  18
• Who classified elements based on atomic numbers?
  ক

  Dobereiner

  খ

  Moseley

  গ

  Newland

  ঘ

  Mendeleev
• The ionization energy of an element depends on the . . . . . . . .
  ক

  Central Charge

  খ

  Monitoring (screening effect)

  গ

  Atomic number

  ঘ

  Fixed configuration
• To remove one electron from the outermost orbit or the shell of the neutral gaseous atom . . . . . . . . is needed.
  ক

  ionization energy

  খ

  dissociation energy

  গ

  electron affinity

  ঘ

  electronegativity
• The alkali metals have relatively low melting point.Which one of the following alkali metals is expected to have the highest melting point?
  ক

  Li

  খ

  Na

  গ

  K

  ঘ

  Rb
• In Mendeleev's periodic table, . . . . . . . . before the nickel?
  ক

  Sr

  খ

  Rb

  গ

  Co

  ঘ

  Mo