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Maharashtra SSC (Class 10) Unit 1C1: Periodic Trends in Atomic Properties — practice questions

Explore 27 free Unit 1C1: Periodic Trends in Atomic Properties questions in Maharashtra SSC (Class 10) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 1C1: Periodic Trends in Atomic Properties questions and exercises with answers

Showing questions 1–27 of 27.

Which property of elements did Dobereiner relate their chemical behaviour to when forming triads?Read the answer and worked solution →Newlands compared the repetition of element properties to a pattern found in which field?Read the answer and worked solution →Up to which element was Newlands' law of octaves found to be applicable?Read the answer and worked solution →On what fundamental property did Mendeleev base the arrangement of elements in his periodic table?Read the answer and worked solution →Mendeleev's periodic law states that properties of elements are a periodic function of their:Read the answer and worked solution →In Mendeleev's periodic table, the vertical columns and horizontal rows are respectively called:Read the answer and worked solution →Which pair of elements created an ambiguity in their sequence because they share the same whole-number atomic mass?Read the answer and worked solution →Which scientist showed using X-ray experiments that the atomic number equals the positive charge on the nucleus?Read the answer and worked solution →The modern periodic law states that properties of elements are a periodic function of their:Read the answer and worked solution →How many periods and groups are there in the modern periodic table?Read the answer and worked solution →The two rows shown separately at the bottom of the modern periodic table are called:Read the answer and worked solution →Which groups of the modern periodic table together constitute the s-block?Read the answer and worked solution →The d-block elements of the modern periodic table are also known as:Read the answer and worked solution →Relative to the zig-zag line drawn in the p-block, where are the metals located?Read the answer and worked solution →Elements placed in the same group of the modern periodic table have the same number of:Read the answer and worked solution →Elements that have the same number of electron-occupied shells belong to the same:Read the answer and worked solution →Using the formula for shell capacity, what is the maximum number of electrons the M shell (n = 3) can hold?Read the answer and worked solution →What is the periodic trend in valency as one moves from left to right across a period?Read the answer and worked solution →In what unit is atomic radius expressed, defined as the distance between the nucleus and the outermost shell?Read the answer and worked solution →What happens to atomic size as one moves down a group of the modern periodic table?Read the answer and worked solution →Among the period-2 elements Li, Be, B, C, N, O whose atomic radii are 152, 111, 88, 77, 74, 66 pm, which element has the largest atom?Read the answer and worked solution →The tendency of a metal atom to lose its valence electrons and form a cation is called its:Read the answer and worked solution →How does the metallic character of elements change while moving down a group?Read the answer and worked solution →The tendency of a nonmetal atom to accept electrons and form an anion, which increases across a period, is called its:Read the answer and worked solution →In the halogen family (group 17), which member exists as a solid at room temperature?Read the answer and worked solution →An element has the electronic configuration 2, 8, 2. To which group and period of the modern periodic table does it belong?Read the answer and worked solution →In which block of the modern periodic table are the nonmetals found?Read the answer and worked solution →

Worked practice questions

Which property of elements did Dobereiner relate their chemical behaviour to when forming triads?

  1. Atomic mass
  2. Atomic number
  3. Nuclear charge
  4. Valence shell
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Correct answer: A. Atomic mass

1. In 1817 Dobereiner studied patterns among the known elements. 2. He proposed that the properties of elements are related to their atomic masses. 3. Atomic number and nuclear charge were not yet known concepts in 1817, ruling them out. 4. Hence the basis of his triads was atomic mass. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 2 "Periodic Classification of Elements", p.25_

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Newlands compared the repetition of element properties to a pattern found in which field?

  1. Painting
  2. Architecture
  3. Music
  4. Astronomy
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Correct answer: C. Music

1. Newlands saw that every eighth element resembled the first. 2. He likened this to the octaves of musical notes. 3. Hence the rule was named the Law of Octaves. 4. The musical notes Do, Re, Mi... directly inspired the table layout. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 2 "Periodic Classification of Elements", p.26_

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Up to which element was Newlands' law of octaves found to be applicable?

  1. Iron
  2. Thorium
  3. Hydrogen
  4. Calcium
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Correct answer: D. Calcium

1. Newlands arranged elements from hydrogen up to thorium. 2. The octave pattern held only for the lighter elements. 3. The law broke down beyond calcium for the heavier elements. 4. Rule out B: thorium was the last element listed, not the limit of validity. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 2 "Periodic Classification of Elements", p.26_

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