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Rajasthan Board Class 10 (RBSE) The p-Block Elements — practice questions

Explore 40 free The p-Block Elements questions in Rajasthan Board Class 10 (RBSE) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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The p-Block Elements questions and exercises with answers

Showing questions 1–30 of 40.

Who put forward the law of triads?Read the answer and worked solution →Newlands' law of octaves stated that every:Read the answer and worked solution →Mendeleev arranged elements primarily in order of:Read the answer and worked solution →The modern periodic table is based on:Read the answer and worked solution →How many periods does the modern periodic table have?Read the answer and worked solution →What is the valency of an element with electronic configuration 2, 8, 3?Read the answer and worked solution →Atomic radius generally DECREASES across a period because:Read the answer and worked solution →Which is the most reactive metal?Read the answer and worked solution →Which property INCREASES on going down a group?Read the answer and worked solution →Which element has the highest electronegativity in the periodic table?Read the answer and worked solution →How does metallic character change down a group?Read the answer and worked solution →Sodium (atomic number 11) belongs to which group and period?Read the answer and worked solution →Which of the following has the largest atomic radius?Read the answer and worked solution →Which trend is followed by ionisation energy across a period?Read the answer and worked solution →Which set lists representative elements (s-block and p-block) only?Read the answer and worked solution →Which pair shows the diagonal relationship in the periodic table?Read the answer and worked solution →Across period 3, which element forms the most acidic oxide?Read the answer and worked solution →Why is potassium more reactive than sodium?Read the answer and worked solution →How does the size of a cation compare with its parent atom?Read the answer and worked solution →Which is the most non-metallic element of group 16?Read the answer and worked solution →Why are the noble gases very stable chemically?Read the answer and worked solution →Mendeleev predicted the existence of an element he called eka-silicon, later identified as:Read the answer and worked solution →Upto which element, the Law of Octaves was found to be applicableRead the answer and worked solution →According to Mendeleev's Periodic Law, the elements were arranged in the periodic table in the order ofRead the answer and worked solution →Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?Read the answer and worked solution →An element which is an essential constituent of all organic compounds belongs toRead the answer and worked solution →Which of the following is the outermost shell for elements of period 2?Read the answer and worked solution →Which one of the following elements exhibit maximum number of valence electrons?Read the answer and worked solution →Which of the following gives the correct increasing order of the atomic radii of O, F and N?Read the answer and worked solution →Which among the following elements has the largest atomic radii?Read the answer and worked solution →

Worked practice questions

Who put forward the law of triads?

  1. Newlands
  2. Mendeleev
  3. Dobereiner
  4. Moseley
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Correct answer: C. Dobereiner

1. Dobereiner observed elements grouped in threes (triads) with similar properties. 2. The atomic mass of the middle element was the mean of the other two. 3. Newlands proposed the law of octaves later. 4. So Dobereiner gave the law of triads. _Source: syllabus Science Ch 5 'Periodic Classification of Elements'_

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Newlands' law of octaves stated that every:

  1. Fifth element resembles the first
  2. Second element resembles the first
  3. Tenth element resembles the first
  4. Eighth element resembles the first
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Correct answer: D. Eighth element resembles the first

1. Newlands arranged elements in order of increasing atomic mass. 2. He found that every eighth element showed similar properties. 3. He drew an analogy to the octaves of music. 4. So the law of octaves repeats every eighth element. _Source: syllabus Science Ch 5 'Periodic Classification of Elements'_

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Mendeleev arranged elements primarily in order of:

  1. Atomic mass
  2. Atomic number
  3. Atomic radius
  4. Density
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Correct answer: A. Atomic mass

1. Mendeleev's periodic table predates the modern one. 2. He used the increasing atomic masses of the elements he knew. 3. He left gaps for undiscovered elements (eka-aluminium, eka-silicon, etc.). 4. Atomic number became the basis only after Moseley. 5. So the original Mendeleev arrangement used atomic mass. _Source: syllabus Science Ch 5 'Periodic Classification of Elements'_

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